#181F6C#181F6C

#181F6C is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.3% C 0.132 H 271.3°. Best body text is #FFFFFF at 14.47:1 contrast (WCAG AA passes).

Color values

HEX	#181F6C
RGB	rgb(24, 31, 108)
HSL	hsl(235, 64%, 26%)
HSV	hsv(235, 78%, 42%)
CMYK	cmyk(77.8%, 71.3%, 0%, 57.6%)
CIE-LAB	lab(16.78, 26.20, -45.46)
CIE-LCH	lch(16.78, 52.46, 299.95°)
OKLab	oklab(29.33% 0.0029 -0.1315)
OKLCH	oklch(29.33% 0.132 271.3)
XYZ	xyz(3.5725, 2.2565, 14.4317)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F6C #6C6518

analogous

#18496C #181F6C #3B186C

triadic

#181F6C #6C181F #1F6C18

tetradic

#181F6C #6C1849 #6C6518 #186C3B

square

#181F6C #6C1849 #6C6518 #186C3B

split-complementary

#181F6C #6C3B18 #496C18

monochromatic

#060719 #0D113A #181F6C #232D9E #2E3CD0

Accessibility & contrast

On white

14.47

#181F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F6C

14.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F6C	#FFFFFF	#000000	##FFFFFF
##181F6C	1.00	14.47	1.45	14.47
#FFFFFF	14.47	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6E

Deuteranopia (green-blind)

#00256B

Tritanopia (blue-blind)

#003442

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181f6c;
/* rgb */ color: rgb(24, 31, 108);
/* oklch */ color: oklch(29.3% 0.132 271.3);

Tailwind

colors: {
  custom: {
    50: '#645b97',
    500: '#181f6c',
    950: '#000000',
  },
}

SCSS

$custom: #181f6c;
$custom-light: #645b97;
$custom-dark: #000000;

JSON

{
  "hex": "#181f6c",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 108
  },
  "hsl": {
    "h": 235,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.29327,
    "c": 0.13152,
    "h": 271.3
  },
  "luminance": 0.02257
}

Semantic roles & 50–950 ramp

primary

#181F6C

secondary

#A2993E

accent

#D941E7

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F6C

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

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