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Colour

#25579C

  • #25579C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#25579C is a blue with RGB values 37, 87, 156 and HSL 215°, 62%, 38%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#25579C#25579C
HEX#25579C
RGBrgb(37, 87, 156)
RGB (0–1)0.1451, 0.3412, 0.6118
RGB percentages14.5%, 34.1%, 61.2%
HSLhsl(214.8, 61.7%, 37.8%)
HSV / HSBhsv(214.8, 76.3%, 61.2%)
CMYK76.3%, 44.2%, 0%, 38.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,447,260
CSS custom property--colour: #25579C;

Brightness & contrast

Relative luminance0.0961WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.19:1
Contrast with white7.19:1WCAG normal text: AAA
Contrast with black2.92:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#DAA863

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#355D9Fno red cones; affects about 1% of men; ΔE 3.5 from the original
Deuteranopia#1E529Bno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#006772no blue cones; rare, and affects men and women equally; ΔE 41.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.19:1WCAG large text: AAA
Contrast with black, large text2.92:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.8Steel blue · ΔE 22.2Cornflower blue · ΔE 25.8Dodgerblue · ΔE 30.6Royal blue · ΔE 30.9Midnight blue · ΔE 32.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9C6A25
Analogous#25929C, #2F259C
Triadic#9C2557, #579C25
Split complementary#9C2F25, #939C25
Tetradic#9C2592, #9C6A25, #259C2F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A4C1E9
Lighter +30%#7AA5E0
Lighter +20%#5189D6
Lighter +10%#2F6EC5
Darker −10%#1B4073
Darker −20%#11294A
Darker −30%#081220
Darker −40%#000000
More saturated +25%#0D53B4
Less saturated −25%#3D5B84

Channel breakdown

R37
G87
B156
Red37 (14.5%)
Green87 (34.1%)
Blue156 (61.2%)
Hue214.79°
Saturation (HSL)61.66%
Lightness37.84%
Dominant channelBlue
Hex per channelR 25 · G 57 · B 9C

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Every value on this page was computed from “25579c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.