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Colour

#102D57

  • #102D57
  • Blue
  • Dark
  • Nearest: Dark slateblue

#102D57 is a blue with RGB values 16, 45, 87 and HSL 215°, 69%, 20%. It is a dark colour, so white text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#102D57#102D57
HEX#102D57
RGBrgb(16, 45, 87)
RGB (0–1)0.0627, 0.1765, 0.3412
RGB percentages6.3%, 17.6%, 34.1%
HSLhsl(215.5, 68.9%, 20.2%)
HSV / HSBhsv(215.5, 81.6%, 34.1%)
CMYK81.6%, 48.3%, 0%, 65.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,060,183
CSS custom property--colour: #102D57;

Brightness & contrast

Relative luminance0.02675WCAG 2.x, 0 is black and 1 is white
Perceived brightness46.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.68:1
Contrast with white13.68:1WCAG normal text: AAA
Contrast with black1.54:1WCAG normal text: Fail
Greyscale equivalent#2A2A2A
Inverted#EFD2A8

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#183159no red cones; affects about 1% of men; ΔE 2.5 from the original
Deuteranopia#092A56no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#00373Dno blue cones; rare, and affects men and women equally; ΔE 28.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.68:1WCAG large text: AAA
Contrast with black, large text1.54:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 26.9Dark slate grey · ΔE 33.1Midnight blue · ΔE 33.2Black · ΔE 34.7Steel blue · ΔE 35.5Dim grey · ΔE 38.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 26.93, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#573A10
Analogous#105157, #161057
Triadic#57102D, #2D5710
Split complementary#571610, #515710
Tetradic#571051, #573A10, #105716

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#548DDF
Lighter +30%#2870D8
Lighter +20%#205AAD
Lighter +10%#184382
Darker −10%#08172C
Darker −20%#000001
Darker −30%#000000
Darker −40%#000000
More saturated +25%#032B64
Less saturated −25%#1D2F4A

Channel breakdown

R16
G45
B87
Red16 (6.3%)
Green45 (17.6%)
Blue87 (34.1%)
Hue215.49°
Saturation (HSL)68.93%
Lightness20.2%
Dominant channelBlue
Hex per channelR 10 · G 2D · B 57

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Every value on this page was computed from “102d57” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.