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Colour

#003F88

  • #003F88
  • Blue
  • Dark
  • Nearest: Dark slateblue

#003F88 is a blue with RGB values 0, 63, 136 and HSL 212°, 100%, 27%. It is a dark colour, so white text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003F88#003F88
HEX#003F88
RGBrgb(0, 63, 136)
RGB (0–1)0, 0.2471, 0.5333
RGB percentages0%, 24.7%, 53.3%
HSLhsl(212.2, 100%, 26.7%)
HSV / HSBhsv(212.2, 100%, 53.3%)
CMYK100%, 53.7%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,264
CSS custom property--colour: #003F88;

Brightness & contrast

Relative luminance0.05333WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.16:1
Contrast with white10.16:1WCAG normal text: AAA
Contrast with black2.07:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#FFC077

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#06478Bno red cones; affects about 1% of men; ΔE 5.5 from the original
Deuteranopia#003C87no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#00515Dno blue cones; rare, and affects men and women equally; ΔE 44.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.16:1WCAG large text: AAA
Contrast with black, large text2.07:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.6Midnight blue · ΔE 22.2Rebecca purple · ΔE 30.1Royal blue · ΔE 31.1Slate blue · ΔE 31.3Steel blue · ΔE 33.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#884900
Analogous#008388, #050088
Triadic#88003F, #3F8800
Split complementary#880500, #838800
Tetradic#880083, #884900, #008805

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#55A4FF
Lighter +30%#2288FF
Lighter +20%#006EEE
Lighter +10%#0057BB
Darker −10%#002755
Darker −20%#001022
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003F88
Less saturated −25%#114077

Channel breakdown

R0
G63
B136
Red0 (0%)
Green63 (24.7%)
Blue136 (53.3%)
Hue212.21°
Saturation (HSL)100%
Lightness26.67%
Dominant channelBlue
Hex per channelR 00 · G 3F · B 88

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Every value on this page was computed from “003f88” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.