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Recognised as Colour

#900C05

  • #900C05
  • Red
  • Dark
  • Nearest: Dark red

#900C05 is a red with RGB values 144, 12, 5 and HSL 3°, 93%, 29%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Dark red.

Colour values

#900C05#900C05
HEX#900C05
RGBrgb(144, 12, 5)
RGB (0–1)0.5647, 0.0471, 0.0196
RGB percentages56.5%, 4.7%, 2%
HSLhsl(3, 93.3%, 29.2%)
HSV / HSBhsv(3, 96.5%, 56.5%)
CMYK0%, 91.7%, 96.5%, 43.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,440,261
CSS custom property--colour: #900C05;

Brightness & contrast

Relative luminance0.06203WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.37:1
Contrast with white9.37:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#6FF3FA

Colour vision & accessibility

Protanopia#3D3501no red cones; affects about 1% of men; ΔE 54.8 from the original
Deuteranopia#5B5000no green cones; the most common form, about 1% of men; ΔE 54.4 from the original
Tritanopia#A0000Eno blue cones; rare, and affects men and women equally; ΔE 6.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.37:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail

Named colours

Nearest named CSS colourDark red (#8B0000)ΔE 1.9, below the just-noticeable difference
Hue familyred
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#058990
Analogous#900544, #905105
Triadic#05900C, #0C0590
Split complementary#059051, #054490
Tetradic#449005, #058990, #510590

Tints, shades & saturation

Lighter +40%#FA6F67
Lighter +30%#F84036
Lighter +20%#F31408
Lighter +10%#C11007
Darker −10%#5F0803
Darker −20%#2D0402
Darker −30%#000000
Darker −40%#000000
More saturated +25%#950800
Less saturated −25%#7D1D18

Channel breakdown

R144
G12
B5
Red144 (56.5%)
Green12 (4.7%)
Blue5 (2%)
Hue3.02°
Saturation (HSL)93.29%
Lightness29.22%
Dominant channelRed
Hex per channelR 90 · G 0C · B 05

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Every value on this page was computed from “900c05” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.