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Recognised as Colour

#252F52

  • #252F52
  • Blue
  • Dark
  • Nearest: Dark slate grey

#252F52 is a blue with RGB values 37, 47, 82 and HSL 227°, 38%, 23%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#252F52#252F52
HEX#252F52
RGBrgb(37, 47, 82)
RGB (0–1)0.1451, 0.1843, 0.3216
RGB percentages14.5%, 18.4%, 32.2%
HSLhsl(226.7, 37.8%, 23.3%)
HSV / HSBhsv(226.7, 54.9%, 32.2%)
CMYK54.9%, 42.7%, 0%, 67.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,436,946
CSS custom property--colour: #252F52;

Brightness & contrast

Relative luminance0.03036WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.07:1
Contrast with white13.07:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#DAD0AD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#213353no red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#1D2F51no green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#12363Cno blue cones; rare, and affects men and women equally; ΔE 23.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.07:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 29Dark slateblue · ΔE 29.1Black · ΔE 31.2Dim grey · ΔE 34Steel blue · ΔE 35.5Slate grey · ΔE 36.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#524825
Analogous#254652, #312552
Triadic#52252F, #2F5225
Split complementary#523125, #465225
Tetradic#522546, #524825, #255231

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7E8EC5
Lighter +30%#5B6FB5
Lighter +20%#455798
Lighter +10%#354375
Darker −10%#151B2F
Darker −20%#05070C
Darker −30%#000000
Darker −40%#000000
More saturated +25%#162761
Less saturated −25%#343743

Channel breakdown

R37
G47
B82
Red37 (14.5%)
Green47 (18.4%)
Blue82 (32.2%)
Hue226.67°
Saturation (HSL)37.82%
Lightness23.33%
Dominant channelBlue
Hex per channelR 25 · G 2F · B 52

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Every value on this page was computed from “252f52” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.