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Recognised as Colour

#21444B

  • #21444B
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#21444B is a cyan with RGB values 33, 68, 75 and HSL 190°, 39%, 21%. It is a dark colour, so white text on it reaches 10.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#21444B#21444B
HEX#21444B
RGBrgb(33, 68, 75)
RGB (0–1)0.1294, 0.2667, 0.2941
RGB percentages12.9%, 26.7%, 29.4%
HSLhsl(190, 38.9%, 21.2%)
HSV / HSBhsv(190, 56%, 29.4%)
CMYK56%, 9.3%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,180,171
CSS custom property--colour: #21444B;

Brightness & contrast

Relative luminance0.04966WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.54:1
Contrast with white10.54:1WCAG normal text: AAA
Contrast with black1.99:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#DEBBB4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3E424Bno red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#383D4Bno green cones; the most common form, about 1% of men; ΔE 12 from the original
Tritanopia#074746no blue cones; rare, and affects men and women equally; ΔE 8.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.54:1WCAG large text: AAA
Contrast with black, large text1.99:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.5Dim grey · ΔE 22.1Slate grey · ΔE 27.6Teal · ΔE 28.4Black · ΔE 29.7Gray · ΔE 30
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.52, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B2821
Analogous#214B3D, #212F4B
Triadic#4B2144, #444B21
Split complementary#4B212F, #4B3D21
Tetradic#3D214B, #4B2821, #2F4B21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#76B6C3
Lighter +30%#52A3B3
Lighter +20%#408492
Lighter +10%#31646E
Darker −10%#112428
Darker −20%#020404
Darker −30%#000000
Darker −40%#000000
More saturated +25%#144D59
Less saturated −25%#2F3B3E

Channel breakdown

R33
G68
B75
Red33 (12.9%)
Green68 (26.7%)
Blue75 (29.4%)
Hue190°
Saturation (HSL)38.89%
Lightness21.18%
Dominant channelBlue
Hex per channelR 21 · G 44 · B 4B

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Every value on this page was computed from “21444b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.