Recognised as Colour

#63100B

#63100B
Red
Dark
Nearest: Maroon

#63100B is a red with RGB values 99, 16, 11 and HSL 3°, 80%, 22%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Maroon.

Colour values

#63100B#63100B

HEX#63100B

RGBrgb(99, 16, 11)

RGB (0–1)0.3882, 0.0627, 0.0431

RGB percentages38.8%, 6.3%, 4.3%

HSLhsl(3.4, 80%, 21.6%)

HSV / HSBhsv(3.4, 88.9%, 38.8%)

CMYK0%, 83.8%, 88.9%, 61.2%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer6,492,171

CSS custom property--colour: #63100B;

Brightness & contrast

Relative luminance0.03047WCAG 2.x, 0 is black and 1 is white

Perceived brightness55.6 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 13.05:1

Contrast with white13.05:1WCAG normal text: AAA

Contrast with black1.61:1WCAG normal text: Fail

Greyscale equivalent#212121

Inverted#9CEFF4

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2B2509no red cones; affects about 1% of men; ΔE 38.7 from the original

Deuteranopia#3F3707no green cones; the most common form, about 1% of men; ΔE 38.7 from the original

Tritanopia#6E0010no blue cones; rare, and affects men and women equally; ΔE 7.7 from the original

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

Contrast with white, large text13.05:1WCAG large text: AAA

Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Maroon · ΔE 17.9 Brown · ΔE 22.6 Dark red · ΔE 22.9 Saddle brown · ΔE 24.7 Sienna · ΔE 26.3 Firebrick · ΔE 29.9

Nearest named CSS colourMaroon (#800000)ΔE 17.89, a distinctly different colour

Hue familyred

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#0B5E63

Analogous#630B32, #633C0B

Triadic#0B6310, #100B63

Split complementary#0B633C, #0B3263

Tetradic#32630B, #0B5E63, #3C0B63

Tints, shades & saturation

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

Lighter +40%#EB584F

Lighter +30%#E62C21

Lighter +20%#BF1F15

Lighter +10%#911710

Darker −10%#350906

Darker −20%#070101

Darker −30%#000000

Darker −40%#000000

More saturated +25%#6E0600

Less saturated −25%#551C19

Channel breakdown

R99

G16

B11

Red99 (38.8%)

Green16 (6.3%)

Blue11 (4.3%)

Hue3.41°

Saturation (HSL)80%

Lightness21.57%

Dominant channelRed

Hex per channelR 63 · G 10 · B 0B

Keep nerding

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

#63100B

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