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Colour

#251D4A

  • #251D4A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#251D4A is a blue with RGB values 37, 29, 74 and HSL 251°, 44%, 20%. It is a dark colour, so white text on it reaches 15.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#251D4A#251D4A
HEX#251D4A
RGBrgb(37, 29, 74)
RGB (0–1)0.1451, 0.1137, 0.2902
RGB percentages14.5%, 11.4%, 29%
HSLhsl(250.7, 43.7%, 20.2%)
HSV / HSBhsv(250.7, 60.8%, 29%)
CMYK50%, 60.8%, 0%, 71%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,432,330
CSS custom property--colour: #251D4A;

Brightness & contrast

Relative luminance0.01766WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.52:1
Contrast with white15.52:1WCAG normal text: AAA
Contrast with black1.35:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#DAE2B5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#06254Cno red cones; affects about 1% of men; ΔE 11.3 from the original
Deuteranopia#062349no green cones; the most common form, about 1% of men; ΔE 11.2 from the original
Tritanopia#1A2730no blue cones; rare, and affects men and women equally; ΔE 27.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.52:1WCAG large text: AAA
Contrast with black, large text1.35:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.2Midnight blue · ΔE 27Black · ΔE 34.9Rebecca purple · ΔE 37.7Dark slate grey · ΔE 40.8Indigo · ΔE 43.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#424A1D
Analogous#1D2B4A, #3C1D4A
Triadic#4A251D, #1D4A25
Split complementary#4A3C1D, #2B4A1D
Tetradic#4A1D2B, #424A1D, #1D4A3C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7D6DC6
Lighter +30%#5C49B7
Lighter +20%#4A3A93
Lighter +10%#372B6F
Darker −10%#130F25
Darker −20%#000001
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1D1057
Less saturated −25%#2D2A3D

Channel breakdown

R37
G29
B74
Red37 (14.5%)
Green29 (11.4%)
Blue74 (29%)
Hue250.67°
Saturation (HSL)43.69%
Lightness20.2%
Dominant channelBlue
Hex per channelR 25 · G 1D · B 4A

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Every value on this page was computed from “251d4a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.