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Recognised as Colour

#023A40

  • #023A40
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#023A40 is a cyan with RGB values 2, 58, 64 and HSL 186°, 94%, 13%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#023A40#023A40
HEX#023A40
RGBrgb(2, 58, 64)
RGB (0–1)0.0078, 0.2275, 0.251
RGB percentages0.8%, 22.7%, 25.1%
HSLhsl(185.8, 93.9%, 12.9%)
HSV / HSBhsv(185.8, 96.9%, 25.1%)
CMYK96.9%, 9.4%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer145,984
CSS custom property--colour: #023A40;

Brightness & contrast

Relative luminance0.03409WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.49:1
Contrast with white12.49:1WCAG normal text: AAA
Contrast with black1.68:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#FDC5BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#343740no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#2C3140no green cones; the most common form, about 1% of men; ΔE 16.3 from the original
Tritanopia#003D3Cno blue cones; rare, and affects men and women equally; ΔE 5.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.49:1WCAG large text: AAA
Contrast with black, large text1.68:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 11Black · ΔE 27.2Dim grey · ΔE 28.2Teal · ΔE 30.4Slate grey · ΔE 33.5Dark cyan · ΔE 34.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.05, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#400802
Analogous#024027, #021B40
Triadic#40023A, #3A4002
Split complementary#40021B, #402702
Tetradic#270240, #400802, #1B4002

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#16E2F8
Lighter +30%#07C0D4
Lighter +20%#0594A3
Lighter +10%#046771
Darker −10%#000D0F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003C42
Less saturated −25%#0A3338

Channel breakdown

R2
G58
B64
Red2 (0.8%)
Green58 (22.7%)
Blue64 (25.1%)
Hue185.81°
Saturation (HSL)93.94%
Lightness12.94%
Dominant channelBlue
Hex per channelR 02 · G 3A · B 40

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Every value on this page was computed from “023a40” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.