#181F68#181F68

#181F68 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 28.9% C 0.126 H 271.5°. Best body text is #FFFFFF at 14.64:1 contrast (WCAG AA passes).

Color values

HEX	#181F68
RGB	rgb(24, 31, 104)
HSL	hsl(235, 63%, 25%)
HSV	hsv(235, 77%, 41%)
CMYK	cmyk(76.9%, 70.2%, 0%, 59.2%)
CIE-LAB	lab(16.37, 24.64, -43.51)
CIE-LCH	lch(16.37, 50.00, 299.52°)
OKLab	oklab(28.91% 0.0033 -0.1258)
OKLCH	oklch(28.91% 0.126 271.5)
XYZ	xyz(3.3645, 2.1733, 13.3362)
Luminance	0.0217 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F68 #686118

analogous

#184768 #181F68 #391868

triadic

#181F68 #68181F #1F6818

tetradic

#181F68 #681847 #686118 #186839

square

#181F68 #681847 #686118 #186839

split-complementary

#181F68 #683918 #476818

monochromatic

#060719 #0D1036 #181F68 #232E9A #2F3DCB

Accessibility & contrast

On white

14.64

#181F68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181F68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F68

14.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F68	#FFFFFF	#000000	##FFFFFF
##181F68	1.00	14.64	1.43	14.64
#FFFFFF	14.64	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C6A

Deuteranopia (green-blind)

#002567

Tritanopia (blue-blind)

#003240

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181f68;
/* rgb */ color: rgb(24, 31, 104);
/* oklch */ color: oklch(28.9% 0.126 271.5);

Tailwind

colors: {
  custom: {
    50: '#635a94',
    500: '#181f68',
    950: '#000000',
  },
}

SCSS

$custom: #181f68;
$custom-light: #635a94;
$custom-dark: #000000;

JSON

{
  "hex": "#181f68",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 104
  },
  "hsl": {
    "h": 234.75,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28906,
    "c": 0.12584,
    "h": 271.5
  },
  "luminance": 0.02174
}

Semantic roles & 50–950 ramp

primary

#181F68

secondary

#9E963E

accent

#D742E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06040D

muted

#7A797E

Preview Lab

Preview with #181F68

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

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