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Recognised as Colour

#25539C

  • #25539C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#25539C is a blue with RGB values 37, 83, 156 and HSL 217°, 62%, 38%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#25539C#25539C
HEX#25539C
RGBrgb(37, 83, 156)
RGB (0–1)0.1451, 0.3255, 0.6118
RGB percentages14.5%, 32.5%, 61.2%
HSLhsl(216.8, 61.7%, 37.8%)
HSV / HSBhsv(216.8, 76.3%, 61.2%)
CMYK76.3%, 46.8%, 0%, 38.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,446,236
CSS custom property--colour: #25539C;

Brightness & contrast

Relative luminance0.0898WCAG 2.x, 0 is black and 1 is white
Perceived brightness85 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.51:1
Contrast with white7.51:1WCAG normal text: AAA
Contrast with black2.8:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#DAAC63

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D5A9Fno red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#114F9Bno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#006470no blue cones; rare, and affects men and women equally; ΔE 43.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.51:1WCAG large text: AAA
Contrast with black, large text2.8:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 16.1Steel blue · ΔE 25.4Cornflower blue · ΔE 26.5Royal blue · ΔE 28.5Midnight blue · ΔE 29.3Slate blue · ΔE 29.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9C6E25
Analogous#258F9C, #32259C
Triadic#9C2553, #539C25
Split complementary#9C3325, #8F9C25
Tetradic#9C258F, #9C6E25, #259C33

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4BFE9
Lighter +30%#7AA2E0
Lighter +20%#5184D6
Lighter +10%#2F69C5
Darker −10%#1B3D73
Darker −20%#11274A
Darker −30%#081120
Darker −40%#000000
More saturated +25%#0D4EB4
Less saturated −25%#3D5884

Channel breakdown

R37
G83
B156
Red37 (14.5%)
Green83 (32.5%)
Blue156 (61.2%)
Hue216.81°
Saturation (HSL)61.66%
Lightness37.84%
Dominant channelBlue
Hex per channelR 25 · G 53 · B 9C

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Every value on this page was computed from “25539c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.