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Colour

#023F41

  • #023F41
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#023F41 is a cyan with RGB values 2, 63, 65 and HSL 182°, 94%, 13%. It is a dark colour, so white text on it reaches 11.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#023F41#023F41
HEX#023F41
RGBrgb(2, 63, 65)
RGB (0–1)0.0078, 0.2471, 0.2549
RGB percentages0.8%, 24.7%, 25.5%
HSLhsl(181.9, 94%, 13.1%)
HSV / HSBhsv(181.9, 96.9%, 25.5%)
CMYK96.9%, 3.1%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer147,265
CSS custom property--colour: #023F41;

Brightness & contrast

Relative luminance0.0395WCAG 2.x, 0 is black and 1 is white
Perceived brightness53 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.73:1
Contrast with white11.73:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#FDC0BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#393B41no red cones; affects about 1% of men; ΔE 17.5 from the original
Deuteranopia#313541no green cones; the most common form, about 1% of men; ΔE 18.2 from the original
Tritanopia#00423Fno blue cones; rare, and affects men and women equally; ΔE 4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.73:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 9.6Dim grey · ΔE 27.5Teal · ΔE 27.7Black · ΔE 29.5Dark cyan · ΔE 32Slate grey · ΔE 33
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 9.56, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#410402
Analogous#024124, #021F41
Triadic#41023F, #3F4102
Split complementary#41021F, #412402
Tetradic#240241, #410402, #1F4102

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#17F1F8
Lighter +30%#07CFD5
Lighter +20%#059FA4
Lighter +10%#046F72
Darker −10%#000F10
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#004143
Less saturated −25%#0A3739

Channel breakdown

R2
G63
B65
Red2 (0.8%)
Green63 (24.7%)
Blue65 (25.5%)
Hue181.9°
Saturation (HSL)94.03%
Lightness13.14%
Dominant channelBlue
Hex per channelR 02 · G 3F · B 41

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Every value on this page was computed from “023f41” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.