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Recognised as Colour

#154C51

  • #154C51
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#154C51 is a cyan with RGB values 21, 76, 81 and HSL 185°, 59%, 20%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#154C51#154C51
HEX#154C51
RGBrgb(21, 76, 81)
RGB (0–1)0.0824, 0.298, 0.3176
RGB percentages8.2%, 29.8%, 31.8%
HSLhsl(185, 58.8%, 20%)
HSV / HSBhsv(185, 74.1%, 31.8%)
CMYK74.1%, 6.2%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,395,793
CSS custom property--colour: #154C51;

Brightness & contrast

Relative luminance0.05922WCAG 2.x, 0 is black and 1 is white
Perceived brightness65.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.61:1
Contrast with white9.61:1WCAG normal text: AAA
Contrast with black2.18:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#EAB3AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#454951no red cones; affects about 1% of men; ΔE 16.3 from the original
Deuteranopia#3D4251no green cones; the most common form, about 1% of men; ΔE 17.5 from the original
Tritanopia#004F4Dno blue cones; rare, and affects men and women equally; ΔE 6.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.61:1WCAG large text: AAA
Contrast with black, large text2.18:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.3Teal · ΔE 23.2Dim grey · ΔE 23.3Slate grey · ΔE 27.3Dark cyan · ΔE 27.4Light slate grey · ΔE 30
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.28, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#511A15
Analogous#155138, #152E51
Triadic#51154C, #4C5115
Split complementary#51152E, #513815
Tetradic#381551, #511A15, #2E5115

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5DCBD5
Lighter +30%#34BECB
Lighter +20%#2A98A2
Lighter +10%#1F727A
Darker −10%#0B2629
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#08575E
Less saturated −25%#224144

Channel breakdown

R21
G76
B81
Red21 (8.2%)
Green76 (29.8%)
Blue81 (31.8%)
Hue185°
Saturation (HSL)58.82%
Lightness20%
Dominant channelBlue
Hex per channelR 15 · G 4C · B 51

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Every value on this page was computed from “154c51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.