Colour

#28131B

#28131B
Red
Dark
Nearest: Black

#28131B is a red with RGB values 40, 19, 27 and HSL 337°, 36%, 12%. It is a dark colour, so white text on it reaches 17.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#28131B#28131B

HEX#28131B

RGBrgb(40, 19, 27)

RGB (0–1)0.1569, 0.0745, 0.1059

RGB percentages15.7%, 7.5%, 10.6%

HSLhsl(337.1, 35.6%, 11.6%)

HSV / HSBhsv(337.1, 52.5%, 15.7%)

CMYK0%, 52.5%, 32.5%, 84.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,626,331

CSS custom property--colour: #28131B;

Brightness & contrast

Relative luminance0.00996WCAG 2.x, 0 is black and 1 is white

Perceived brightness27.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.51:1

Contrast with white17.51:1WCAG normal text: AAA

Contrast with black1.2:1WCAG normal text: Fail

Greyscale equivalent#181818

Inverted#D7ECE4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#16171Bno red cones; affects about 1% of men; ΔE 11.8 from the original

Deuteranopia#1B1B1Bno green cones; the most common form, about 1% of men; ΔE 12.2 from the original

Tritanopia#2B1216no blue cones; rare, and affects men and women equally; ΔE 4.1 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text17.51:1WCAG large text: AAA

Contrast with black, large text1.2:1WCAG large text: Fail

Named colours

Black · ΔE 15.1 Dark slate grey · ΔE 32.8 Dim grey · ΔE 37.5 Gray · ΔE 46.3 Slate grey · ΔE 47.1 Dark slateblue · ΔE 48.6

Nearest named CSS colourBlack (#000000)ΔE 15.14, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#132820

Analogous#281326, #281613

Triadic#1B2813, #131B28

Split complementary#132816, #132628

Tetradic#252813, #132820, #151328

Tints, shades & saturation

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

Lighter +40%#AF5879

Lighter +30%#904461

Lighter +20%#6D344A

Lighter +10%#4B2332

Darker −10%#050304

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#2F0C19

Less saturated −25%#211A1D

Channel breakdown

R40

G19

B27

Red40 (15.7%)

Green19 (7.5%)

Blue27 (10.6%)

Hue337.14°

Saturation (HSL)35.59%

Lightness11.57%

Dominant channelRed

Hex per channelR 28 · G 13 · B 1B

Keep nerding

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

#28131B

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

Nerdulate something else