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Colour

#037DF9

  • #037DF9
  • Blue
  • Dark
  • Nearest: Royal blue

#037DF9 is a blue with RGB values 3, 125, 249 and HSL 210°, 98%, 49%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#037DF9#037DF9
HEX#037DF9
RGBrgb(3, 125, 249)
RGB (0–1)0.0118, 0.4902, 0.9765
RGB percentages1.2%, 49%, 97.6%
HSLhsl(210.2, 97.6%, 49.4%)
HSV / HSBhsv(210.2, 98.8%, 97.6%)
CMYK98.8%, 49.8%, 0%, 2.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer228,857
CSS custom property--colour: #037DF9;

Brightness & contrast

Relative luminance0.21526WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.31:1
Contrast with white3.96:1WCAG normal text: Fail
Contrast with black5.31:1WCAG normal text: AA
Greyscale equivalent#6C6C6C
Inverted#FC8206

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#298AFEno red cones; affects about 1% of men; ΔE 7.5 from the original
Deuteranopia#0077F7no green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#009CAFno blue cones; rare, and affects men and women equally; ΔE 67.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.96:1WCAG large text: AA
Contrast with black, large text5.31:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.6Dodgerblue · ΔE 12Slate blue · ΔE 22.7Medium slateblue · ΔE 23.1Cornflower blue · ΔE 23.7Medium purple · ΔE 26.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F97F03
Analogous#03F8F9, #0403F9
Triadic#F9037D, #7DF903
Split complementary#F90403, #F8F903
Tetradic#F903F8, #F97F03, #03F904

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CAE4FE
Lighter +30%#97CAFE
Lighter +20%#65B0FD
Lighter +10%#3297FD
Darker −10%#0264C7
Darker −20%#024A94
Darker −30%#013162
Darker −40%#01182F
More saturated +25%#007DFC
Less saturated −25%#237DD9

Channel breakdown

R3
G125
B249
Red3 (1.2%)
Green125 (49%)
Blue249 (97.6%)
Hue210.24°
Saturation (HSL)97.62%
Lightness49.41%
Dominant channelBlue
Hex per channelR 03 · G 7D · B F9

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Every value on this page was computed from “037df9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.