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Recognised as Colour

#0F3857

  • #0F3857
  • Blue
  • Dark
  • Nearest: Dark slate grey

#0F3857 is a blue with RGB values 15, 56, 87 and HSL 206°, 71%, 20%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#0F3857#0F3857
HEX#0F3857
RGBrgb(15, 56, 87)
RGB (0–1)0.0588, 0.2196, 0.3412
RGB percentages5.9%, 22%, 34.1%
HSLhsl(205.8, 70.6%, 20%)
HSV / HSBhsv(205.8, 82.8%, 34.1%)
CMYK82.8%, 35.6%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer997,463
CSS custom property--colour: #0F3857;

Brightness & contrast

Relative luminance0.03618WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.18:1
Contrast with white12.18:1WCAG normal text: AAA
Contrast with black1.72:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#F0C7A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2A3958no red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#1F3256no green cones; the most common form, about 1% of men; ΔE 7.1 from the original
Tritanopia#004043no blue cones; rare, and affects men and women equally; ΔE 21.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.18:1WCAG large text: AAA
Contrast with black, large text1.72:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 23.2Steel blue · ΔE 31.7Dim grey · ΔE 31.7Black · ΔE 31.9Slate grey · ΔE 32.8Dark slateblue · ΔE 34.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 23.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#572E0F
Analogous#0F5752, #0F1457
Triadic#570F38, #38570F
Split complementary#570F14, #57520F
Tetradic#520F57, #572E0F, #14570F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#51A3E1
Lighter +30%#268CDA
Lighter +20%#1E70AE
Lighter +10%#175483
Darker −10%#081C2B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#023A64
Less saturated −25%#1C364A

Channel breakdown

R15
G56
B87
Red15 (5.9%)
Green56 (22%)
Blue87 (34.1%)
Hue205.83°
Saturation (HSL)70.59%
Lightness20%
Dominant channelBlue
Hex per channelR 0F · G 38 · B 57

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Every value on this page was computed from “0f3857” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.