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Recognised as Colour

#252B30

  • #252B30
  • Blue
  • Dark
  • Nearest: Dark slate grey

#252B30 is a blue with RGB values 37, 43, 48 and HSL 207°, 13%, 17%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#252B30#252B30
HEX#252B30
RGBrgb(37, 43, 48)
RGB (0–1)0.1451, 0.1686, 0.1882
RGB percentages14.5%, 16.9%, 18.8%
HSLhsl(207.3, 12.9%, 16.7%)
HSV / HSBhsv(207.3, 22.9%, 18.8%)
CMYK22.9%, 10.4%, 0%, 81.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,435,888
CSS custom property--colour: #252B30;

Brightness & contrast

Relative luminance0.02334WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.32:1
Contrast with white14.32:1WCAG normal text: AAA
Contrast with black1.47:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#DAD4CF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#292B30no red cones; affects about 1% of men; ΔE 1.8 from the original
Deuteranopia#282A30no green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#222C2Dno blue cones; rare, and affects men and women equally; ΔE 3.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.32:1WCAG large text: AAA
Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.6Black · ΔE 17.7Dim grey · ΔE 27.6Slate grey · ΔE 36.3Gray · ΔE 36.7Light slate grey · ΔE 39.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#302A25
Analogous#253030, #252630
Triadic#30252B, #2B3025
Split complementary#302526, #303025
Tetradic#302530, #302A25, #263025

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#82929F
Lighter +30%#687886
Lighter +20%#515F6A
Lighter +10%#3B454D
Darker −10%#0F1113
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1A2C3B
Less saturated −25%#2B2B2B

Channel breakdown

R37
G43
B48
Red37 (14.5%)
Green43 (16.9%)
Blue48 (18.8%)
Hue207.27°
Saturation (HSL)12.94%
Lightness16.67%
Dominant channelBlue
Hex per channelR 25 · G 2B · B 30

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Every value on this page was computed from “252b30” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.