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Recognised as Colour

#63373E

  • #63373E
  • Red
  • Dark
  • Nearest: Dim grey

#63373E is a red with RGB values 99, 55, 62 and HSL 350°, 29%, 30%. It is a dark colour, so white text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Dim grey.

Colour values

#63373E#63373E
HEX#63373E
RGBrgb(99, 55, 62)
RGB (0–1)0.3882, 0.2157, 0.2431
RGB percentages38.8%, 21.6%, 24.3%
HSLhsl(350.5, 28.6%, 30.2%)
HSV / HSBhsv(350.5, 44.4%, 38.8%)
CMYK0%, 44.4%, 37.4%, 61.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,502,206
CSS custom property--colour: #63373E;

Brightness & contrast

Relative luminance0.05733WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.78:1
Contrast with white9.78:1WCAG normal text: AAA
Contrast with black2.15:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#9CC8C1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3F3F3Eno red cones; affects about 1% of men; ΔE 21.2 from the original
Deuteranopia#4A473Dno green cones; the most common form, about 1% of men; ΔE 21.4 from the original
Tritanopia#6A333Ano blue cones; rare, and affects men and women equally; ΔE 5.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.78:1WCAG large text: AAA
Contrast with black, large text2.15:1WCAG large text: Fail

Named colours

Dim grey · ΔE 26.2Gray · ΔE 32.5Dark slate grey · ΔE 33.3Rosy brown · ΔE 35.1Black · ΔE 35.6Sienna · ΔE 35.9
Nearest named CSS colourDim grey (#696969)ΔE 26.17, a distinctly different colour
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#37635C
Analogous#633754, #634637
Triadic#3E6337, #373E63
Split complementary#376346, #375463
Tetradic#546337, #37635C, #463763

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C99DA4
Lighter +30%#B77D86
Lighter +20%#A45C67
Lighter +10%#844953
Darker −10%#422529
Darker −20%#211315
Darker −30%#010000
Darker −40%#000000
More saturated +25%#762431
Less saturated −25%#504A4B

Channel breakdown

R99
G55
B62
Red99 (38.8%)
Green55 (21.6%)
Blue62 (24.3%)
Hue350.45°
Saturation (HSL)28.57%
Lightness30.2%
Dominant channelRed
Hex per channelR 63 · G 37 · B 3E

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Every value on this page was computed from “63373e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.