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Recognised as Colour

#102F57

  • #102F57
  • Blue
  • Dark
  • Nearest: Dark slateblue

#102F57 is a blue with RGB values 16, 47, 87 and HSL 214°, 69%, 20%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#102F57#102F57
HEX#102F57
RGBrgb(16, 47, 87)
RGB (0–1)0.0627, 0.1843, 0.3412
RGB percentages6.3%, 18.4%, 34.1%
HSLhsl(213.8, 68.9%, 20.2%)
HSV / HSBhsv(213.8, 81.6%, 34.1%)
CMYK81.6%, 46%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,060,695
CSS custom property--colour: #102F57;

Brightness & contrast

Relative luminance0.02831WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.41:1
Contrast with white13.41:1WCAG normal text: AAA
Contrast with black1.57:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#EFD0A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1B3259no red cones; affects about 1% of men; ΔE 2.1 from the original
Deuteranopia#0F2C56no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#00383Eno blue cones; rare, and affects men and women equally; ΔE 26.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.41:1WCAG large text: AAA
Contrast with black, large text1.57:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 28.3Dark slate grey · ΔE 31.2Black · ΔE 33.9Steel blue · ΔE 34.6Midnight blue · ΔE 35.1Dim grey · ΔE 37.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 28.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#573810
Analogous#105257, #151057
Triadic#57102F, #2F5710
Split complementary#571410, #535710
Tetradic#571052, #573810, #105715

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5491DF
Lighter +30%#2875D8
Lighter +20%#205EAD
Lighter +10%#184682
Darker −10%#08182C
Darker −20%#000001
Darker −30%#000000
Darker −40%#000000
More saturated +25%#032D64
Less saturated −25%#1D314A

Channel breakdown

R16
G47
B87
Red16 (6.3%)
Green47 (18.4%)
Blue87 (34.1%)
Hue213.8°
Saturation (HSL)68.93%
Lightness20.2%
Dominant channelBlue
Hex per channelR 10 · G 2F · B 57

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Every value on this page was computed from “102f57” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.