#181B6D#181B6D

#181B6D is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.138 H 272.1°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#181B6D
RGB	rgb(24, 27, 109)
HSL	hsl(238, 64%, 26%)
HSV	hsv(238, 78%, 43%)
CMYK	cmyk(78%, 75.2%, 0%, 57.3%)
CIE-LAB	lab(15.91, 29.24, -47.54)
CIE-LCH	lch(15.91, 55.81, 301.60°)
OKLab	oklab(28.73% 0.0052 -0.1376)
OKLCH	oklch(28.73% 0.138 272.1)
XYZ	xyz(3.5280, 2.0818, 14.6809)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B6D #6D6A18

analogous

#18456D #181B6D #3F186D

triadic

#181B6D #6D181B #1B6D18

tetradic

#181B6D #6D1845 #6D6A18 #186D3F

square

#181B6D #6D1845 #6D6A18 #186D3F

split-complementary

#181B6D #6D3F18 #456D18

monochromatic

#060619 #0D0F3B #181B6D #23279F #2E34D1

Accessibility & contrast

On white

14.83

#181B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#181B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B6D

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B6D	#FFFFFF	#000000	##FFFFFF
##181B6D	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6F

Deuteranopia (green-blind)

#00236C

Tritanopia (blue-blind)

#003242

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181b6d;
/* rgb */ color: rgb(24, 27, 109);
/* oklch */ color: oklch(28.7% 0.138 272.1);

Tailwind

colors: {
  custom: {
    50: '#645898',
    500: '#181b6d',
    950: '#000000',
  },
}

SCSS

$custom: #181b6d;
$custom-light: #645898;
$custom-dark: #000000;

JSON

{
  "hex": "#181b6d",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 109
  },
  "hsl": {
    "h": 237.882,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.28732,
    "c": 0.13766,
    "h": 272.1
  },
  "luminance": 0.02082
}

Semantic roles & 50–950 ramp

primary

#181B6D

secondary

#A39F3E

accent

#E141E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #181B6D

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

Preview Lab → · Contrast checker → · Palette generator →