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Recognised as Colour

#0A231D

  • #0A231D
  • Cyan
  • Dark
  • Nearest: Black

#0A231D is a cyan with RGB values 10, 35, 29 and HSL 166°, 56%, 9%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#0A231D#0A231D
HEX#0A231D
RGBrgb(10, 35, 29)
RGB (0–1)0.0392, 0.1373, 0.1137
RGB percentages3.9%, 13.7%, 11.4%
HSLhsl(165.6, 55.6%, 8.8%)
HSV / HSBhsv(165.6, 71.4%, 13.7%)
CMYK71.4%, 0%, 17.1%, 86.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer664,349
CSS custom property--colour: #0A231D;

Brightness & contrast

Relative luminance0.01355WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.52:1
Contrast with white16.52:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#F5DCE2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#22201Dno red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#1E1E1Dno green cones; the most common form, about 1% of men; ΔE 11.4 from the original
Tritanopia#012321no blue cones; rare, and affects men and women equally; ΔE 3.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.52:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Black · ΔE 16.5Dark slate grey · ΔE 20.2Dim grey · ΔE 34.8Teal · ΔE 41.6Dark olivegreen · ΔE 43.1Gray · ΔE 43.5
Nearest named CSS colourBlack (#000000)ΔE 16.47, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#230A10
Analogous#0A2311, #0A1C23
Triadic#1D0A23, #231D0A
Split complementary#230A1C, #23110A
Tetradic#110A23, #230A10, #1C230A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#37C2A0
Lighter +30%#2C9A80
Lighter +20%#21725F
Lighter +10%#154B3E
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#042920
Less saturated −25%#101D1A

Channel breakdown

R10
G35
B29
Red10 (3.9%)
Green35 (13.7%)
Blue29 (11.4%)
Hue165.6°
Saturation (HSL)55.56%
Lightness8.82%
Dominant channelGreen
Hex per channelR 0A · G 23 · B 1D

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Every value on this page was computed from “0a231d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.