Colour

#B63501

#B63501
Orange
Dark
Nearest: Firebrick

#B63501 is a orange with RGB values 182, 53, 1 and HSL 17°, 99%, 36%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Firebrick.

Colour values

#B63501#B63501

HEX#B63501

RGBrgb(182, 53, 1)

RGB (0–1)0.7137, 0.2078, 0.0039

RGB percentages71.4%, 20.8%, 0.4%

HSLhsl(17.2, 98.9%, 35.9%)

HSV / HSBhsv(17.2, 99.5%, 71.4%)

CMYK0%, 70.9%, 99.5%, 28.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer11,941,121

CSS custom property--colour: #B63501;

Brightness & contrast

Relative luminance0.12493WCAG 2.x, 0 is black and 1 is white

Perceived brightness107.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6:1

Contrast with white6:1WCAG normal text: AA

Contrast with black3.5:1WCAG normal text: Fail

Greyscale equivalent#4D4D4D

Inverted#49CAFE

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#5D5100no red cones; affects about 1% of men; ΔE 55.2 from the original

Deuteranopia#7C6E00no green cones; the most common form, about 1% of men; ΔE 55.3 from the original

Tritanopia#C9002Eno blue cones; rare, and affects men and women equally; ΔE 25.3 from the original

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

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

Contrast with black, large text3.5:1WCAG large text: AA

Named colours

Firebrick · ΔE 17.2 Dark red · ΔE 18.6 Chocolate · ΔE 19.5 Maroon · ΔE 22.8 Tomato · ΔE 22.8 Brown · ΔE 23.5

Nearest named CSS colourFirebrick (#B22222)ΔE 17.19, a distinctly different colour

Hue familyorange

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0182B6

Analogous#B60128, #B68F01

Triadic#01B635, #3501B6

Split complementary#01B68F, #0128B6

Tetradic#28B601, #0182B6, #8F01B6

Tints, shades & saturation

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

Lighter +40%#FEA885

Lighter +30%#FE8352

Lighter +20%#FE5F1F

Lighter +10%#E94401

Darker −10%#832601

Darker −20%#511700

Darker −30%#1E0900

Darker −40%#000000

More saturated +25%#B73500

Less saturated −25%#9F3F18

Channel breakdown

R182

G53

Red182 (71.4%)

Green53 (20.8%)

Blue1 (0.4%)

Hue17.24°

Saturation (HSL)98.91%

Lightness35.88%

Dominant channelRed

Hex per channelR B6 · G 35 · B 01

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Harmonies

Lighter and darker

Similar named colours

Also reads as

B63501 (chemical formula)

Formula
686,445.81 g/mol
63501 atoms

B63501 has a molar mass of 686,445.81 g/mol, made up of 63501 atoms across 1 element: 63501 × B.

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Molar mass

Molar mass686,445.81 g/mol

Total atoms per molecule63501

Distinct elements1

Mass of one molecule1.1398701 × 10^-18 g

Molecules per gram8.7729296 × 10^17

Composition by mass

B100%

Boron (B × 63501)686,445.81 g/mol, 100%

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Elements in this formula

Boron

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