Recognised as Colour

#C30300

#C30300
Red
Dark
Nearest: Firebrick

#C30300 is a red with RGB values 195, 3, 0 and HSL 1°, 100%, 38%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#C30300#C30300

HEX#C30300

RGBrgb(195, 3, 0)

RGB (0–1)0.7647, 0.0118, 0

RGB percentages76.5%, 1.2%, 0%

HSLhsl(0.9, 100%, 38.2%)

HSV / HSBhsv(0.9, 100%, 76.5%)

CMYK0%, 98.5%, 100%, 23.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer12,780,288

CSS custom property--colour: #C30300;

Brightness & contrast

Relative luminance0.11667WCAG 2.x, 0 is black and 1 is white

Perceived brightness106.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.3:1

Contrast with white6.3:1WCAG normal text: AA

Contrast with black3.33:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#3CFCFF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#524700no red cones; affects about 1% of men; ΔE 70.7 from the original

Deuteranopia#7C6D00no green cones; the most common form, about 1% of men; ΔE 69.7 from the original

Tritanopia#D8000Bno blue cones; rare, and affects men and women equally; ΔE 7.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text6.3:1WCAG large text: AAA

Contrast with black, large text3.33:1WCAG large text: AA

Named colours

Firebrick · ΔE 19.7 Orange red · ΔE 22.1 Crimson · ΔE 23 Red · ΔE 23 Dark red · ΔE 23.4 Tomato · ΔE 24.3

Nearest named CSS colourFirebrick (#B22222)ΔE 19.67, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#00C0C3

Analogous#C3005F, #C36400

Triadic#00C303, #0300C3

Split complementary#00C364, #005FC3

Tetradic#5FC300, #00C0C3, #6400C3

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#FF9290

Lighter +30%#FF5F5D

Lighter +20%#FF2D2A

Lighter +10%#F60400

Darker −10%#900200

Darker −20%#5D0100

Darker −30%#2A0100

Darker −40%#000000

More saturated +25%#C30300

Less saturated −25%#AB1B18

Channel breakdown

R195

Red195 (76.5%)

Green3 (1.2%)

Blue0 (0%)

Hue0.92°

Saturation (HSL)100%

Lightness38.24%

Dominant channelRed

Hex per channelR C3 · G 03 · B 00

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Harmonies

Lighter and darker

Similar named colours

Also reads as

C30300 (chemical formula)

Formula
363,933.3 g/mol
30300 atoms

C30300 has a molar mass of 363,933.3 g/mol, made up of 30300 atoms across 1 element: 30300 × C.

Open this reading on its own page →

Molar mass

Molar mass363,933.3 g/mol

Total atoms per molecule30300

Distinct elements1

Mass of one molecule6.0432546 × 10^-19 g

Molecules per gram1.6547375 × 10^18

Name

NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show

Composition by mass

C100%

Carbon (C × 30300)363,933.3 g/mol, 100%

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Elements in this formula

Carbon

Nerdulate something else

Nothing in mind? Surprise me · today’s page