Nerdulator> put something in

Colour

#15181D

  • #15181D
  • Blue
  • Dark
  • Nearest: Black

#15181D is a blue with RGB values 21, 24, 29 and HSL 218°, 16%, 10%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#15181D#15181D
HEX#15181D
RGBrgb(21, 24, 29)
RGB (0–1)0.0824, 0.0941, 0.1137
RGB percentages8.2%, 9.4%, 11.4%
HSLhsl(217.5, 16%, 9.8%)
HSV / HSBhsv(217.5, 27.6%, 11.4%)
CMYK27.6%, 17.2%, 0%, 88.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,382,429
CSS custom property--colour: #15181D;

Brightness & contrast

Relative luminance0.00901WCAG 2.x, 0 is black and 1 is white
Perceived brightness23.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.79:1
Contrast with white17.79:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#EAE7E2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#16181Dno red cones; affects about 1% of men; ΔE 0.5 from the original
Deuteranopia#16171Dno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#13191Ano blue cones; rare, and affects men and women equally; ΔE 3.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.79:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Black · ΔE 9.1Dark slate grey · ΔE 25.9Dim grey · ΔE 36.5Slate grey · ΔE 45.2Gray · ΔE 45.6Light slate grey · ΔE 48.4
Nearest named CSS colourBlack (#000000)ΔE 9.06, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D1A15
Analogous#151C1D, #16151D
Triadic#1D1518, #181D15
Split complementary#1D1615, #1C1D15
Tetradic#1D151C, #1D1A15, #151D16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6B7A93
Lighter +30%#556176
Lighter +20%#404958
Lighter +10%#2A303B
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F1623
Less saturated −25%#191919

Channel breakdown

R21
G24
B29
Red21 (8.2%)
Green24 (9.4%)
Blue29 (11.4%)
Hue217.5°
Saturation (HSL)16%
Lightness9.8%
Dominant channelBlue
Hex per channelR 15 · G 18 · B 1D

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “15181d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.