Colour

#630B00

#630B00
Red
Dark
Nearest: Maroon

#630B00 is a red with RGB values 99, 11, 0 and HSL 7°, 100%, 19%. It is a dark colour, so white text on it reaches 13.3:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#630B00#630B00

HEX#630B00

RGBrgb(99, 11, 0)

RGB (0–1)0.3882, 0.0431, 0

RGB percentages38.8%, 4.3%, 0%

HSLhsl(6.7, 100%, 19.4%)

HSV / HSBhsv(6.7, 100%, 38.8%)

CMYK0%, 88.9%, 100%, 61.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,490,880

CSS custom property--colour: #630B00;

Brightness & contrast

Relative luminance0.02892WCAG 2.x, 0 is black and 1 is white

Perceived brightness54.8 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.3:1

Contrast with white13.3:1WCAG normal text: AAA

Contrast with black1.58:1WCAG normal text: Fail

Greyscale equivalent#1D1D1D

Inverted#9CF4FF

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#292300no red cones; affects about 1% of men; ΔE 40.8 from the original

Deuteranopia#3E3600no green cones; the most common form, about 1% of men; ΔE 40.1 from the original

Tritanopia#6E000Ano blue cones; rare, and affects men and women equally; ΔE 6.6 from the original

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

Contrast with white, large text13.3:1WCAG large text: AAA

Contrast with black, large text1.58:1WCAG large text: Fail

Named colours

Maroon · ΔE 14.9 Dark red · ΔE 19.9 Brown · ΔE 21.9 Saddle brown · ΔE 23.6 Sienna · ΔE 26.1 Firebrick · ΔE 28.2

Nearest named CSS colourMaroon (#800000)ΔE 14.93, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#005863

Analogous#630026, #633D00

Triadic#00630B, #0B0063

Split complementary#00633C, #002763

Tetradic#266300, #005863, #3D0063

Tints, shades & saturation

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

Lighter +40%#FF4730

Lighter +30%#FC1C00

Lighter +20%#C91600

Lighter +10%#961100

Darker −10%#300500

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#630B00

Less saturated −25%#57150C

Channel breakdown

R99

G11

Red99 (38.8%)

Green11 (4.3%)

Blue0 (0%)

Hue6.67°

Saturation (HSL)100%

Lightness19.41%

Dominant channelRed

Hex per channelR 63 · G 0B · B 00

Keep nerding

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#630B00

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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