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Recognised as Colour

#101B25

  • #101B25
  • Blue
  • Dark
  • Nearest: Black

#101B25 is a blue with RGB values 16, 27, 37 and HSL 209°, 40%, 10%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#101B25#101B25
HEX#101B25
RGBrgb(16, 27, 37)
RGB (0–1)0.0627, 0.1059, 0.1451
RGB percentages6.3%, 10.6%, 14.5%
HSLhsl(208.6, 39.6%, 10.4%)
HSV / HSBhsv(208.6, 56.8%, 14.5%)
CMYK56.8%, 27%, 0%, 85.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,055,525
CSS custom property--colour: #101B25;

Brightness & contrast

Relative luminance0.01028WCAG 2.x, 0 is black and 1 is white
Perceived brightness25.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.42:1
Contrast with white17.42:1WCAG normal text: AAA
Contrast with black1.21:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#EFE4DA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#171B25no red cones; affects about 1% of men; ΔE 2.8 from the original
Deuteranopia#141925no green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#081D1Eno blue cones; rare, and affects men and women equally; ΔE 8.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.42:1WCAG large text: AAA
Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Black · ΔE 12.5Dark slate grey · ΔE 24.8Dim grey · ΔE 36.2Slate grey · ΔE 43.7Gray · ΔE 45.2Light slate grey · ΔE 46.8
Nearest named CSS colourBlack (#000000)ΔE 12.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#251A10
Analogous#102525, #101125
Triadic#25101B, #1B2510
Split complementary#251010, #252510
Tetradic#251025, #251A10, #112510

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4E83B3
Lighter +30%#3E6990
Lighter +20%#2F4F6C
Lighter +10%#1F3549
Darker −10%#010101
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#091B2C
Less saturated −25%#171B1E

Channel breakdown

R16
G27
B37
Red16 (6.3%)
Green27 (10.6%)
Blue37 (14.5%)
Hue208.57°
Saturation (HSL)39.62%
Lightness10.39%
Dominant channelBlue
Hex per channelR 10 · G 1B · B 25

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Every value on this page was computed from “101b25” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.