#181F7F#181F7F

#181F7F is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.4% C 0.157 H 270.1°. Best body text is #FFFFFF at 13.63:1 contrast (WCAG AA passes).

Color values

HEX	#181F7F
RGB	rgb(24, 31, 127)
HSL	hsl(236, 68%, 30%)
HSV	hsv(236, 81%, 50%)
CMYK	cmyk(81.1%, 75.6%, 0%, 50.2%)
CIE-LAB	lab(18.83, 33.36, -54.30)
CIE-LCH	lch(18.83, 63.73, 301.57°)
OKLab	oklab(31.41% 0.0004 -0.1573)
OKLCH	oklch(31.41% 0.157 270.1)
XYZ	xyz(4.6961, 2.7059, 20.3494)
Luminance	0.0271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F7F #7F7818

analogous

#18537F #181F7F #44187F

triadic

#181F7F #7F181F #1F7F18

tetradic

#181F7F #7F1853 #7F7818 #187F44

square

#181F7F #7F1853 #7F7818 #187F44

split-complementary

#181F7F #7F4418 #537F18

monochromatic

#05061A #0E124C #181F7F #222CB2 #3843D9

Accessibility & contrast

On white

13.63

#181F7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#181F7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F7F

13.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F7F	#FFFFFF	#000000	##FFFFFF
##181F7F	1.00	13.63	1.54	13.63
#FFFFFF	13.63	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003382

Deuteranopia (green-blind)

#00297D

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181f7f;
/* rgb */ color: rgb(24, 31, 127);
/* oklch */ color: oklch(31.4% 0.157 270.1);

Tailwind

colors: {
  custom: {
    50: '#695ba5',
    500: '#181f7f',
    950: '#000000',
  },
}

SCSS

$custom: #181f7f;
$custom-light: #695ba5;
$custom-dark: #000000;

JSON

{
  "hex": "#181f7f",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 127
  },
  "hsl": {
    "h": 235.922,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31413,
    "c": 0.15728,
    "h": 270.1
  },
  "luminance": 0.02706
}

Semantic roles & 50–950 ramp

primary

#181F7F

secondary

#B3AB3F

accent

#DF3DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181F7F

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

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