Recognised as Colour

#28151C

#28151C
Red
Dark
Nearest: Black

#28151C is a red with RGB values 40, 21, 28 and HSL 338°, 31%, 12%. It is a dark colour, so white text on it reaches 17.3:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#28151C#28151C

HEX#28151C

RGBrgb(40, 21, 28)

RGB (0–1)0.1569, 0.0824, 0.1098

RGB percentages15.7%, 8.2%, 11%

HSLhsl(337.9, 31.1%, 12%)

HSV / HSBhsv(337.9, 47.5%, 15.7%)

CMYK0%, 47.5%, 30%, 84.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,626,844

CSS custom property--colour: #28151C;

Brightness & contrast

Relative luminance0.01071WCAG 2.x, 0 is black and 1 is white

Perceived brightness28.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 17.29:1

Contrast with white17.29:1WCAG normal text: AAA

Contrast with black1.21:1WCAG normal text: Fail

Greyscale equivalent#1A1A1A

Inverted#D7EAE3

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#17191Cno red cones; affects about 1% of men; ΔE 11.2 from the original

Deuteranopia#1C1C1Cno green cones; the most common form, about 1% of men; ΔE 11 from the original

Tritanopia#2B1417no 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 text17.29:1WCAG large text: AAA

Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Black · ΔE 14.6 Dark slate grey · ΔE 31.5 Dim grey · ΔE 36.5 Gray · ΔE 45.4 Slate grey · ΔE 46.2 Dark slateblue · ΔE 48.8

Nearest named CSS colourBlack (#000000)ΔE 14.57, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#152821

Analogous#281526, #281715

Triadic#1C2815, #151C28

Split complementary#152817, #152628

Tetradic#252815, #152821, #171528

Tints, shades & saturation

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

Lighter +40%#AB5E7A

Lighter +30%#8C4A62

Lighter +20%#6B384B

Lighter +10%#492733

Darker −10%#070305

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#300D1A

Less saturated −25%#201D1E

Channel breakdown

R40

G21

B28

Red40 (15.7%)

Green21 (8.2%)

Blue28 (11%)

Hue337.89°

Saturation (HSL)31.15%

Lightness11.96%

Dominant channelRed

Hex per channelR 28 · G 15 · B 1C

Keep nerding

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

#28151C

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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