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Colour

#252B39

  • #252B39
  • Blue
  • Dark
  • Nearest: Dark slate grey

#252B39 is a blue with RGB values 37, 43, 57 and HSL 222°, 21%, 18%. It is a dark colour, so white text on it reaches 14.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#252B39#252B39
HEX#252B39
RGBrgb(37, 43, 57)
RGB (0–1)0.1451, 0.1686, 0.2235
RGB percentages14.5%, 16.9%, 22.4%
HSLhsl(222, 21.3%, 18.4%)
HSV / HSBhsv(222, 35.1%, 22.4%)
CMYK35.1%, 24.6%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,435,897
CSS custom property--colour: #252B39;

Brightness & contrast

Relative luminance0.02416WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.16:1
Contrast with white14.16:1WCAG normal text: AAA
Contrast with black1.48:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#DAD4C6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#272C3Ano red cones; affects about 1% of men; ΔE 0.7 from the original
Deuteranopia#252A39no green cones; the most common form, about 1% of men; ΔE 0.9 from the original
Tritanopia#1F2E30no blue cones; rare, and affects men and women equally; ΔE 9.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.16:1WCAG large text: AAA
Contrast with black, large text1.48:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20Black · ΔE 20.1Dim grey · ΔE 28.6Slate grey · ΔE 35.5Gray · ΔE 37.4Light slate grey · ΔE 38.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 19.95, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#393325
Analogous#253539, #292539
Triadic#39252B, #2B3925
Split complementary#392925, #353925
Tetradic#392535, #393325, #253929

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7E8CAC
Lighter +30%#617196
Lighter +20%#4D5A77
Lighter +10%#394258
Darker −10%#11141A
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#192645
Less saturated −25%#2F2F2F

Channel breakdown

R37
G43
B57
Red37 (14.5%)
Green43 (16.9%)
Blue57 (22.4%)
Hue222°
Saturation (HSL)21.28%
Lightness18.43%
Dominant channelBlue
Hex per channelR 25 · G 2B · B 39

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Every value on this page was computed from “252b39” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.