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Colour

#28475F

  • #28475F
  • Blue
  • Dark
  • Nearest: Dark slate grey

#28475F is a blue with RGB values 40, 71, 95 and HSL 206°, 41%, 26%. It is a dark colour, so white text on it reaches 9.7:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#28475F#28475F
HEX#28475F
RGBrgb(40, 71, 95)
RGB (0–1)0.1569, 0.2784, 0.3725
RGB percentages15.7%, 27.8%, 37.3%
HSLhsl(206.2, 40.7%, 26.5%)
HSV / HSBhsv(206.2, 57.9%, 37.3%)
CMYK57.9%, 25.3%, 0%, 62.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,639,711
CSS custom property--colour: #28475F;

Brightness & contrast

Relative luminance0.05784WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.74:1
Contrast with white9.74:1WCAG normal text: AAA
Contrast with black2.16:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#D7B8A0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D4760no red cones; affects about 1% of men; ΔE 6.8 from the original
Deuteranopia#35425Fno green cones; the most common form, about 1% of men; ΔE 7 from the original
Tritanopia#044D4Fno blue cones; rare, and affects men and women equally; ΔE 18.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.74:1WCAG large text: AAA
Contrast with black, large text2.16:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 16.3Dim grey · ΔE 23.8Slate grey · ΔE 25Steel blue · ΔE 27.7Light slate grey · ΔE 27.9Gray · ΔE 30.6
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 16.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5F4028
Analogous#285F5C, #282B5F
Triadic#5F2847, #475F28
Split complementary#5F282B, #5F5C28
Tetradic#5C285F, #5F4028, #2B5F28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#87AECC
Lighter +30%#6396BD
Lighter +20%#467DA7
Lighter +10%#376283
Darker −10%#192C3B
Darker −20%#0A1117
Darker −30%#000000
Darker −40%#000000
More saturated +25%#174970
Less saturated −25%#39454E

Channel breakdown

R40
G71
B95
Red40 (15.7%)
Green71 (27.8%)
Blue95 (37.3%)
Hue206.18°
Saturation (HSL)40.74%
Lightness26.47%
Dominant channelBlue
Hex per channelR 28 · G 47 · B 5F

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Every value on this page was computed from “28475f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.