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Colour

#12121B

  • #12121B
  • Blue
  • Dark
  • Nearest: Black

#12121B is a blue with RGB values 18, 18, 27 and HSL 240°, 20%, 9%. It is a dark colour, so white text on it reaches 18.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#12121B#12121B
HEX#12121B
RGBrgb(18, 18, 27)
RGB (0–1)0.0706, 0.0706, 0.1059
RGB percentages7.1%, 7.1%, 10.6%
HSLhsl(240, 20%, 8.8%)
HSV / HSBhsv(240, 33.3%, 10.6%)
CMYK33.3%, 33.3%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,184,283
CSS custom property--colour: #12121B;

Brightness & contrast

Relative luminance0.0064WCAG 2.x, 0 is black and 1 is white
Perceived brightness19.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.62:1
Contrast with white18.62:1WCAG normal text: AAA
Contrast with black1.13:1WCAG normal text: Fail
Greyscale equivalent#131313
Inverted#EDEDE4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#10131Bno red cones; affects about 1% of men; ΔE 1.4 from the original
Deuteranopia#0F131Bno green cones; the most common form, about 1% of men; ΔE 1.7 from the original
Tritanopia#101415no blue cones; rare, and affects men and women equally; ΔE 6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.62:1WCAG large text: AAA
Contrast with black, large text1.13:1WCAG large text: Fail

Named colours

Black · ΔE 8.6Dark slate grey · ΔE 29.1Dim grey · ΔE 39.2Slate grey · ΔE 47.5Gray · ΔE 48.2Dark slateblue · ΔE 50
Nearest named CSS colourBlack (#000000)ΔE 8.64, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1B1B12
Analogous#12161B, #16121B
Triadic#1B1212, #121B12
Split complementary#1B1612, #161B12
Tetradic#1B1216, #1B1B12, #121B16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#646495
Lighter +30%#4F4F77
Lighter +20%#3B3B58
Lighter +10%#26263A
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C0C21
Less saturated −25%#161616

Channel breakdown

R18
G18
B27
Red18 (7.1%)
Green18 (7.1%)
Blue27 (10.6%)
Hue240°
Saturation (HSL)20%
Lightness8.82%
Dominant channelBlue
Hex per channelR 12 · G 12 · B 1B

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Every value on this page was computed from “12121b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.