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Colour

#37B1FA

  • #37B1FA
  • Blue
  • Dark
  • Nearest: Deep skyblue

#37B1FA is a blue with RGB values 55, 177, 250 and HSL 202°, 95%, 60%. It is a dark colour, so black text on it reaches 8.8:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#37B1FA#37B1FA
HEX#37B1FA
RGBrgb(55, 177, 250)
RGB (0–1)0.2157, 0.6941, 0.9804
RGB percentages21.6%, 69.4%, 98%
HSLhsl(202.5, 95.1%, 59.8%)
HSV / HSBhsv(202.5, 78%, 98%)
CMYK78%, 29.2%, 0%, 2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,650,042
CSS custom property--colour: #37B1FA;

Brightness & contrast

Relative luminance0.39159WCAG 2.x, 0 is black and 1 is white
Perceived brightness162.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.83:1
Contrast with white2.38:1WCAG normal text: Fail
Contrast with black8.83:1WCAG normal text: AAA
Greyscale equivalent#9C9C9C
Inverted#C84E05

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8FB2FDno red cones; affects about 1% of men; ΔE 17.2 from the original
Deuteranopia#74A0F9no green cones; the most common form, about 1% of men; ΔE 19.4 from the original
Tritanopia#00C3CBno blue cones; rare, and affects men and women equally; ΔE 41.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.38:1WCAG large text: Fail
Contrast with black, large text8.83:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 9.9Cornflower blue · ΔE 19.9Light skyblue · ΔE 20.3Steel blue · ΔE 21.7Sky blue · ΔE 27.1Dodgerblue · ΔE 27.7
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 9.92, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FA8037
Analogous#37FAE2, #3750FA
Triadic#FA37B1, #B1FA37
Split complementary#FA3750, #FAE137
Tetradic#E137FA, #FA8037, #50FA37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFFF
Lighter +30%#CCEBFE
Lighter +20%#9BD8FC
Lighter +10%#69C4FB
Darker −10%#069DF8
Darker −20%#057EC6
Darker −30%#045E94
Darker −40%#023F63
More saturated +25%#32B2FF
Less saturated −25%#51ABE0

Channel breakdown

R55
G177
B250
Red55 (21.6%)
Green177 (69.4%)
Blue250 (98%)
Hue202.46°
Saturation (HSL)95.12%
Lightness59.8%
Dominant channelBlue
Hex per channelR 37 · G B1 · B FA

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Every value on this page was computed from “37b1fa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.