#181841#181841

#181841 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.6% C 0.076 H 278.9°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#181841
RGB	rgb(24, 24, 65)
HSL	hsl(240, 46%, 17%)
HSV	hsv(240, 63%, 25%)
CMYK	cmyk(63.1%, 63.1%, 0%, 74.5%)
CIE-LAB	lab(10.77, 14.27, -26.17)
CIE-LCH	lch(10.77, 29.81, 298.59°)
OKLab	oklab(23.65% 0.0117 -0.075)
OKLCH	oklch(23.65% 0.076 278.9)
XYZ	xyz(1.6572, 1.2290, 5.1499)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.55

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181841 #414118

analogous

#182D41 #181841 #2D1841

triadic

#181841 #411818 #184118

tetradic

#181841 #41182D #414118 #18412D

square

#181841 #41182D #414118 #18412D

split-complementary

#181841 #412D18 #2D4118

monochromatic

#080816 #080816 #181841 #29296E #39399A

Accessibility & contrast

On white

16.86

#181841 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#181841 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181841

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181841	#FFFFFF	#000000	##FFFFFF
##181841	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011F42

Deuteranopia (green-blind)

#001B40

Tritanopia (blue-blind)

#042129

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #181841;
/* rgb */ color: rgb(24, 24, 65);
/* oklch */ color: oklch(23.6% 0.076 278.9);

Tailwind

colors: {
  custom: {
    50: '#595476',
    500: '#181841',
    950: '#000000',
  },
}

SCSS

$custom: #181841;
$custom-light: #595476;
$custom-dark: #000000;

JSON

{
  "hex": "#181841",
  "rgb": {
    "r": 24,
    "g": 24,
    "b": 65
  },
  "hsl": {
    "h": 240,
    "s": 46.067,
    "l": 17.451
  },
  "oklch": {
    "l": 0.23649,
    "c": 0.07588,
    "h": 278.9
  },
  "luminance": 0.01229
}

Semantic roles & 50–950 ramp

primary

#181841

secondary

#78783D

accent

#D652D6

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040208

muted

#79787B

Preview Lab

Preview with #181841

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →