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Recognised as Colour

#037DF8

  • #037DF8
  • Blue
  • Dark
  • Nearest: Royal blue

#037DF8 is a blue with RGB values 3, 125, 248 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

#037DF8#037DF8
HEX#037DF8
RGBrgb(3, 125, 248)
RGB (0–1)0.0118, 0.4902, 0.9725
RGB percentages1.2%, 49%, 97.3%
HSLhsl(210.1, 97.6%, 49.2%)
HSV / HSBhsv(210.1, 98.8%, 97.3%)
CMYK98.8%, 49.6%, 0%, 2.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer228,856
CSS custom property--colour: #037DF8;

Brightness & contrast

Relative luminance0.21464WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.29:1
Contrast with white3.97:1WCAG normal text: Fail
Contrast with black5.29:1WCAG normal text: AA
Greyscale equivalent#6C6C6C
Inverted#FC8207

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B8AFCno red cones; affects about 1% of men; ΔE 8 from the original
Deuteranopia#0076F6no green cones; the most common form, about 1% of men; ΔE 4.7 from the original
Tritanopia#009BAFno blue cones; rare, and affects men and women equally; ΔE 66.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.97:1WCAG large text: AA
Contrast with black, large text5.29:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.7Dodgerblue · ΔE 11.5Slate blue · ΔE 22.8Cornflower blue · ΔE 23.2Medium slateblue · ΔE 23.4Medium purple · ΔE 26.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.68, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F87E03
Analogous#03F8F8, #0303F8
Triadic#F8037D, #7DF803
Split complementary#F80403, #F7F803
Tetradic#F803F8, #F87E03, #03F804

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C9E3FE
Lighter +30%#96CAFE
Lighter +20%#64B0FD
Lighter +10%#3197FD
Darker −10%#0264C6
Darker −20%#024A93
Darker −30%#013161
Darker −40%#01172E
More saturated +25%#007DFB
Less saturated −25%#227DD9

Channel breakdown

R3
G125
B248
Red3 (1.2%)
Green125 (49%)
Blue248 (97.3%)
Hue210.12°
Saturation (HSL)97.61%
Lightness49.22%
Dominant channelBlue
Hex per channelR 03 · G 7D · B F8

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Every value on this page was computed from “037df8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.