#181B6F#181B6F

#181B6F is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.140 H 272.0°. Best body text is #FFFFFF at 14.73:1 contrast (WCAG AA passes).

Color values

HEX	#181B6F
RGB	rgb(24, 27, 111)
HSL	hsl(238, 64%, 26%)
HSV	hsv(238, 78%, 44%)
CMYK	cmyk(78.4%, 75.7%, 0%, 56.5%)
CIE-LAB	lab(16.13, 29.99, -48.47)
CIE-LCH	lch(16.13, 57.00, 301.74°)
OKLab	oklab(28.96% 0.0048 -0.1403)
OKLCH	oklch(28.96% 0.14 272)
XYZ	xyz(3.6369, 2.1254, 15.2544)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B6F #6F6C18

analogous

#18476F #181B6F #41186F

triadic

#181B6F #6F181B #1B6F18

tetradic

#181B6F #6F1847 #6F6C18 #186F41

square

#181B6F #6F1847 #6F6C18 #186F41

split-complementary

#181B6F #6F4118 #476F18

monochromatic

#050619 #0D0F3D #181B6F #2327A1 #2F35D2

Accessibility & contrast

On white

14.73

#181B6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181B6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B6F

14.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B6F	#FFFFFF	#000000	##FFFFFF
##181B6F	1.00	14.73	1.43	14.73
#FFFFFF	14.73	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C71

Deuteranopia (green-blind)

#00246D

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181b6f;
/* rgb */ color: rgb(24, 27, 111);
/* oklch */ color: oklch(29.0% 0.140 272.0);

Tailwind

colors: {
  custom: {
    50: '#655899',
    500: '#181b6f',
    950: '#000000',
  },
}

SCSS

$custom: #181b6f;
$custom-light: #655899;
$custom-dark: #000000;

JSON

{
  "hex": "#181b6f",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 111
  },
  "hsl": {
    "h": 237.931,
    "s": 64.444,
    "l": 26.471
  },
  "oklch": {
    "l": 0.28957,
    "c": 0.14037,
    "h": 272
  },
  "luminance": 0.02126
}

Semantic roles & 50–950 ramp

primary

#181B6F

secondary

#A5A13E

accent

#E240E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181B6F

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

Preview Lab → · Contrast checker → · Palette generator →