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Recognised as Colour

#37AFDB

  • #37AFDB
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#37AFDB is a cyan with RGB values 55, 175, 219 and HSL 196°, 69%, 54%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#37AFDB#37AFDB
HEX#37AFDB
RGBrgb(55, 175, 219)
RGB (0–1)0.2157, 0.6863, 0.8588
RGB percentages21.6%, 68.6%, 85.9%
HSLhsl(196.1, 69.5%, 53.7%)
HSV / HSBhsv(196.1, 74.9%, 85.9%)
CMYK74.9%, 20.1%, 0%, 14.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,649,499
CSS custom property--colour: #37AFDB;

Brightness & contrast

Relative luminance0.36587WCAG 2.x, 0 is black and 1 is white
Perceived brightness156 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.32:1
Contrast with white2.52:1WCAG normal text: Fail
Contrast with black8.32:1WCAG normal text: AAA
Greyscale equivalent#999999
Inverted#C85024

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#98ACDDno red cones; affects about 1% of men; ΔE 23.5 from the original
Deuteranopia#829CDAno green cones; the most common form, about 1% of men; ΔE 25.1 from the original
Tritanopia#00BCBDno blue cones; rare, and affects men and women equally; ΔE 28 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.52:1WCAG large text: Fail
Contrast with black, large text8.32:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 12.3Light skyblue · ΔE 15.1Sky blue · ΔE 16.4Steel blue · ΔE 20.4Cadetblue · ΔE 24.9Light steelblue · ΔE 26.3
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 12.3, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DB6337
Analogous#37DBB5, #375DDB
Triadic#DB37AF, #AFDB37
Split complementary#DB375D, #DBB537
Tetradic#B537DB, #DB6337, #5DDB37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F4FA
Lighter +30%#B9E3F2
Lighter +20%#8DD2EB
Lighter +10%#62C0E3
Darker −10%#2293BD
Darker −20%#1A7292
Darker −30%#125067
Darker −40%#0B2E3B
More saturated +25%#19BDF9
Less saturated −25%#55A1BE

Channel breakdown

R55
G175
B219
Red55 (21.6%)
Green175 (68.6%)
Blue219 (85.9%)
Hue196.1°
Saturation (HSL)69.49%
Lightness53.73%
Dominant channelBlue
Hex per channelR 37 · G AF · B DB

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Every value on this page was computed from “37afdb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.