#181D6F#181D6F

#181D6F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.138 H 271.5°. Best body text is #FFFFFF at 14.54:1 contrast (WCAG AA passes).

Color values

HEX	#181D6F
RGB	rgb(24, 29, 111)
HSL	hsl(237, 64%, 26%)
HSV	hsv(237, 78%, 44%)
CMYK	cmyk(78.4%, 73.9%, 0%, 56.5%)
CIE-LAB	lab(16.60, 28.69, -47.70)
CIE-LCH	lch(16.60, 55.66, 301.02°)
OKLab	oklab(29.3% 0.0037 -0.138)
OKLCH	oklch(29.3% 0.138 271.5)
XYZ	xyz(3.6843, 2.2202, 15.2702)
Luminance	0.0222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D6F #6F6A18

analogous

#18496F #181D6F #3F186F

triadic

#181D6F #6F181D #1D6F18

tetradic

#181D6F #6F1849 #6F6A18 #186F3F

square

#181D6F #6F1849 #6F6A18 #186F3F

split-complementary

#181D6F #6F3F18 #496F18

monochromatic

#050719 #0D103D #181D6F #232AA1 #2F39D2

Accessibility & contrast

On white

14.54

#181D6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181D6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D6F

14.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D6F	#FFFFFF	#000000	##FFFFFF
##181D6F	1.00	14.54	1.44	14.54
#FFFFFF	14.54	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D71

Deuteranopia (green-blind)

#00256E

Tritanopia (blue-blind)

#003443

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181d6f;
/* rgb */ color: rgb(24, 29, 111);
/* oklch */ color: oklch(29.3% 0.138 271.5);

Tailwind

colors: {
  custom: {
    50: '#655999',
    500: '#181d6f',
    950: '#000000',
  },
}

SCSS

$custom: #181d6f;
$custom-light: #655999;
$custom-dark: #000000;

JSON

{
  "hex": "#181d6f",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 111
  },
  "hsl": {
    "h": 236.552,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29295,
    "c": 0.13809,
    "h": 271.5
  },
  "luminance": 0.02221
}

Semantic roles & 50–950 ramp

primary

#181D6F

secondary

#A59F3E

accent

#DE40E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181D6F

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

Preview Lab → · Contrast checker → · Palette generator →