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Recognised as Colour

#21544F

  • #21544F
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#21544F is a cyan with RGB values 33, 84, 79 and HSL 174°, 44%, 23%. It is a dark colour, so white text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#21544F#21544F
HEX#21544F
RGBrgb(33, 84, 79)
RGB (0–1)0.1294, 0.3294, 0.3098
RGB percentages12.9%, 32.9%, 31%
HSLhsl(174.1, 43.6%, 22.9%)
HSV / HSBhsv(174.1, 60.7%, 32.9%)
CMYK60.7%, 0%, 6%, 67.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,184,271
CSS custom property--colour: #21544F;

Brightness & contrast

Relative luminance0.07228WCAG 2.x, 0 is black and 1 is white
Perceived brightness72 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.59:1
Contrast with white8.59:1WCAG normal text: AAA
Contrast with black2.45:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#DEABB0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#50504Fno red cones; affects about 1% of men; ΔE 18.4 from the original
Deuteranopia#484A50no green cones; the most common form, about 1% of men; ΔE 19 from the original
Tritanopia#005652no blue cones; rare, and affects men and women equally; ΔE 5.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.59:1WCAG large text: AAA
Contrast with black, large text2.45:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.9Teal · ΔE 20.1Dim grey · ΔE 22.1Dark cyan · ΔE 24.3Slate grey · ΔE 27.5Gray · ΔE 28.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.9, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#542126
Analogous#215435, #214054
Triadic#4F2154, #544F21
Split complementary#54213F, #543621
Tetradic#362154, #542126, #3F5421

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#77CAC2
Lighter +30%#53BBB1
Lighter +20%#3E9D94
Lighter +10%#2F7971
Darker −10%#132F2D
Darker −20%#040B0A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#12635B
Less saturated −25%#304543

Channel breakdown

R33
G84
B79
Red33 (12.9%)
Green84 (32.9%)
Blue79 (31%)
Hue174.12°
Saturation (HSL)43.59%
Lightness22.94%
Dominant channelGreen
Hex per channelR 21 · G 54 · B 4F

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Every value on this page was computed from “21544f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.