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Recognised as Colour

#153D50

  • #153D50
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#153D50 is a cyan with RGB values 21, 61, 80 and HSL 199°, 58%, 20%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#153D50#153D50
HEX#153D50
RGBrgb(21, 61, 80)
RGB (0–1)0.0824, 0.2392, 0.3137
RGB percentages8.2%, 23.9%, 31.4%
HSLhsl(199.3, 58.4%, 19.8%)
HSV / HSBhsv(199.3, 73.8%, 31.4%)
CMYK73.7%, 23.7%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,391,952
CSS custom property--colour: #153D50;

Brightness & contrast

Relative luminance0.04076WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.57:1
Contrast with white11.57:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#EAC2AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#343C51no red cones; affects about 1% of men; ΔE 9.7 from the original
Deuteranopia#2B3650no green cones; the most common form, about 1% of men; ΔE 10.5 from the original
Tritanopia#004243no blue cones; rare, and affects men and women equally; ΔE 14.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.57:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 14.8Dim grey · ΔE 26.7Black · ΔE 29.4Slate grey · ΔE 29.7Light slate grey · ΔE 32.6Steel blue · ΔE 33.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 14.77, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#502815
Analogous#155046, #151F50
Triadic#50153D, #3D5015
Split complementary#50151F, #504615
Tetradic#461550, #502815, #1F5015

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5DAED4
Lighter +30%#3599C9
Lighter +20%#2A7BA1
Lighter +10%#205C78
Darker −10%#0A1E28
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#08415D
Less saturated −25%#223943

Channel breakdown

R21
G61
B80
Red21 (8.2%)
Green61 (23.9%)
Blue80 (31.4%)
Hue199.32°
Saturation (HSL)58.42%
Lightness19.8%
Dominant channelBlue
Hex per channelR 15 · G 3D · B 50

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Every value on this page was computed from “153d50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.