Colour

#FF0018

#FF0018
Red
Dark
Nearest: Red

#FF0018 is a red with RGB values 255, 0, 24 and HSL 354°, 100%, 50%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Red.

Colour values

#FF0018#FF0018

HEX#FF0018

RGBrgb(255, 0, 24)

RGB (0–1)1, 0, 0.0941

RGB percentages100%, 0%, 9.4%

HSLhsl(354.4, 100%, 50%)

HSV / HSBhsv(354.4, 100%, 100%)

CMYK0%, 100%, 90.6%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer16,711,704

CSS custom property--colour: #FF0018;

Brightness & contrast

Relative luminance0.21326WCAG 2.x, 0 is black and 1 is white

Perceived brightness139.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.27:1

Contrast with white3.99:1WCAG normal text: Fail

Contrast with black5.27:1WCAG normal text: AA

Greyscale equivalent#383838

Inverted#00FFE7

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#6C5F11no red cones; affects about 1% of men; ΔE 86.7 from the original

Deuteranopia#A39000no green cones; the most common form, about 1% of men; ΔE 86 from the original

Tritanopia#FF0015no blue cones; rare, and affects men and women equally; ΔE 1.1 from the original

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

Contrast with white, large text3.99:1WCAG large text: AA

Contrast with black, large text5.27:1WCAG large text: AAA

Named colours

Red · ΔE 6.7 Orange red · ΔE 15.7 Tomato · ΔE 27.9 Crimson · ΔE 29.1 Firebrick · ΔE 36.3 Coral · ΔE 39.8

Nearest named CSS colourRed (#FF0000)ΔE 6.75, clearly different but related

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#00FFE7

Analogous#FF0097, #FF6800

Triadic#18FF00, #0018FF

Split complementary#00FF68, #0097FF

Tetradic#97FF00, #00FFE7, #6800FF

Tints, shades & saturation

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

Lighter +40%#FFCCD1

Lighter +30%#FF99A3

Lighter +20%#FF6674

Lighter +10%#FF3346

Darker −10%#CC0013

Darker −20%#99000E

Darker −30%#66000A

Darker −40%#330005

More saturated +25%#FF0018

Less saturated −25%#DF2032

Channel breakdown

R255

B24

Red255 (100%)

Green0 (0%)

Blue24 (9.4%)

Hue354.35°

Saturation (HSL)100%

Lightness50%

Dominant channelRed

Hex per channelR FF · G 00 · B 18

Keep nerding

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

#FF0018

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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