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Recognised as Colour

#151D2A

  • #151D2A
  • Blue
  • Dark
  • Nearest: Black

#151D2A is a blue with RGB values 21, 29, 42 and HSL 217°, 33%, 12%. It is a dark colour, so white text on it reaches 16.9:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#151D2A#151D2A
HEX#151D2A
RGBrgb(21, 29, 42)
RGB (0–1)0.0824, 0.1137, 0.1647
RGB percentages8.2%, 11.4%, 16.5%
HSLhsl(217.1, 33.3%, 12.4%)
HSV / HSBhsv(217.1, 50%, 16.5%)
CMYK50%, 31%, 0%, 83.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,383,722
CSS custom property--colour: #151D2A;

Brightness & contrast

Relative luminance0.01205WCAG 2.x, 0 is black and 1 is white
Perceived brightness28.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.92:1
Contrast with white16.92:1WCAG normal text: AAA
Contrast with black1.24:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#EAE2D5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#181E2Bno red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#161C2Ano green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#0E2021no blue cones; rare, and affects men and women equally; ΔE 10.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.92:1WCAG large text: AAA
Contrast with black, large text1.24:1WCAG large text: Fail

Named colours

Black · ΔE 14.5Dark slate grey · ΔE 24.9Dim grey · ΔE 35.2Slate grey · ΔE 42.3Gray · ΔE 44.1Light slate grey · ΔE 45.4
Nearest named CSS colourBlack (#000000)ΔE 14.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#2A2215
Analogous#15282A, #17152A
Triadic#2A151D, #1D2A15
Split complementary#2A1715, #282A15
Tetradic#2A1528, #2A2215, #152A17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5D7CAE
Lighter +30%#486390
Lighter +20%#374C6E
Lighter +10%#26344C
Darker −10%#040608
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0D1B32
Less saturated −25%#1D1F22

Channel breakdown

R21
G29
B42
Red21 (8.2%)
Green29 (11.4%)
Blue42 (16.5%)
Hue217.14°
Saturation (HSL)33.33%
Lightness12.35%
Dominant channelBlue
Hex per channelR 15 · G 1D · B 2A

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Every value on this page was computed from “151d2a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.