#181D6E#181D6E

#181D6E is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.137 H 271.6°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#181D6E
RGB	rgb(24, 29, 110)
HSL	hsl(237, 64%, 26%)
HSV	hsv(237, 78%, 43%)
CMYK	cmyk(78.2%, 73.6%, 0%, 56.9%)
CIE-LAB	lab(16.50, 28.31, -47.23)
CIE-LCH	lch(16.50, 55.06, 300.94°)
OKLab	oklab(29.19% 0.0039 -0.1367)
OKLCH	oklch(29.19% 0.137 271.6)
XYZ	xyz(3.6296, 2.1983, 14.9819)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D6E #6E6918

analogous

#18486E #181D6E #3E186E

triadic

#181D6E #6E181D #1D6E18

tetradic

#181D6E #6E1848 #6E6918 #186E3E

square

#181D6E #6E1848 #6E6918 #186E3E

split-complementary

#181D6E #6E3E18 #486E18

monochromatic

#050719 #0D103C #181D6E #232AA0 #2F38D2

Accessibility & contrast

On white

14.59

#181D6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181D6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D6E

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D6E	#FFFFFF	#000000	##FFFFFF
##181D6E	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D70

Deuteranopia (green-blind)

#00256D

Tritanopia (blue-blind)

#003443

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181d6e;
/* rgb */ color: rgb(24, 29, 110);
/* oklch */ color: oklch(29.2% 0.137 271.6);

Tailwind

colors: {
  custom: {
    50: '#655998',
    500: '#181d6e',
    950: '#000000',
  },
}

SCSS

$custom: #181d6e;
$custom-light: #655998;
$custom-dark: #000000;

JSON

{
  "hex": "#181d6e",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 110
  },
  "hsl": {
    "h": 236.512,
    "s": 64.179,
    "l": 26.275
  },
  "oklch": {
    "l": 0.29185,
    "c": 0.13671,
    "h": 271.6
  },
  "luminance": 0.02199
}

Semantic roles & 50–950 ramp

primary

#181D6E

secondary

#A49E3E

accent

#DD41E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181D6E

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

Preview Lab → · Contrast checker → · Palette generator →