#181F66#181F66

#181F66 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.123 H 271.6°. Best body text is #FFFFFF at 14.72:1 contrast (WCAG AA passes).

Color values

HEX	#181F66
RGB	rgb(24, 31, 102)
HSL	hsl(235, 62%, 25%)
HSV	hsv(235, 76%, 40%)
CMYK	cmyk(76.5%, 69.6%, 0%, 60%)
CIE-LAB	lab(16.17, 23.85, -42.53)
CIE-LCH	lch(16.17, 48.76, 299.29°)
OKLab	oklab(28.7% 0.0035 -0.1229)
OKLCH	oklch(28.7% 0.123 271.6)
XYZ	xyz(3.2641, 2.1331, 12.8075)
Luminance	0.0213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F66 #665F18

analogous

#184666 #181F66 #381866

triadic

#181F66 #66181F #1F6618

tetradic

#181F66 #661846 #665F18 #186638

square

#181F66 #661846 #665F18 #186638

split-complementary

#181F66 #663818 #466618

monochromatic

#060819 #0C1034 #181F66 #242E98 #2F3DC9

Accessibility & contrast

On white

14.72

#181F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F66

14.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F66	#FFFFFF	#000000	##FFFFFF
##181F66	1.00	14.72	1.43	14.72
#FFFFFF	14.72	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C68

Deuteranopia (green-blind)

#002565

Tritanopia (blue-blind)

#00323F

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181f66;
/* rgb */ color: rgb(24, 31, 102);
/* oklch */ color: oklch(28.7% 0.123 271.6);

Tailwind

colors: {
  custom: {
    50: '#625a92',
    500: '#181f66',
    950: '#000000',
  },
}

SCSS

$custom: #181f66;
$custom-light: #625a92;
$custom-dark: #000000;

JSON

{
  "hex": "#181f66",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 102
  },
  "hsl": {
    "h": 234.615,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.28698,
    "c": 0.12297,
    "h": 271.6
  },
  "luminance": 0.02133
}

Semantic roles & 50–950 ramp

primary

#181F66

secondary

#9C943E

accent

#D643E5

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F66

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

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