#181F6B#181F6B

#181F6B is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.130 H 271.3°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#181F6B
RGB	rgb(24, 31, 107)
HSL	hsl(235, 63%, 26%)
HSV	hsv(235, 78%, 42%)
CMYK	cmyk(77.6%, 71%, 0%, 58%)
CIE-LAB	lab(16.68, 25.81, -44.97)
CIE-LCH	lch(16.68, 51.85, 299.85°)
OKLab	oklab(29.22% 0.003 -0.1301)
OKLCH	oklch(29.22% 0.13 271.3)
XYZ	xyz(3.5196, 2.2353, 14.1530)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F6B #6B6418

analogous

#18486B #181F6B #3A186B

triadic

#181F6B #6B181F #1F6B18

tetradic

#181F6B #6B1848 #6B6418 #186B3A

square

#181F6B #6B1848 #6B6418 #186B3A

split-complementary

#181F6B #6B3A18 #486B18

monochromatic

#060719 #0D1139 #181F6B #232D9D #2E3CCF

Accessibility & contrast

On white

14.51

#181F6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181F6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F6B

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F6B	#FFFFFF	#000000	##FFFFFF
##181F6B	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6D

Deuteranopia (green-blind)

#00256A

Tritanopia (blue-blind)

#003442

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181f6b;
/* rgb */ color: rgb(24, 31, 107);
/* oklch */ color: oklch(29.2% 0.130 271.3);

Tailwind

colors: {
  custom: {
    50: '#635b96',
    500: '#181f6b',
    950: '#000000',
  },
}

SCSS

$custom: #181f6b;
$custom-light: #635b96;
$custom-dark: #000000;

JSON

{
  "hex": "#181f6b",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 107
  },
  "hsl": {
    "h": 234.94,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.29221,
    "c": 0.13011,
    "h": 271.3
  },
  "luminance": 0.02236
}

Semantic roles & 50–950 ramp

primary

#181F6B

secondary

#A1983E

accent

#D841E6

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F6B

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

Preview Lab → · Contrast checker → · Palette generator →