#181B7F#181B7F

#181B7F is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.161 H 270.7°. Best body text is #FFFFFF at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#181B7F
RGB	rgb(24, 27, 127)
HSL	hsl(238, 68%, 30%)
HSV	hsv(238, 81%, 50%)
CMYK	cmyk(81.1%, 78.7%, 0%, 50.2%)
CIE-LAB	lab(17.96, 35.80, -55.73)
CIE-LCH	lch(17.96, 66.23, 302.71°)
OKLab	oklab(30.8% 0.002 -0.1614)
OKLCH	oklch(30.8% 0.161 270.7)
XYZ	xyz(4.5981, 2.5098, 20.3167)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B7F #7F7C18

analogous

#184F7F #181B7F #48187F

triadic

#181B7F #7F181B #1B7F18

tetradic

#181B7F #7F184F #7F7C18 #187F48

square

#181B7F #7F184F #7F7C18 #187F48

split-complementary

#181B7F #7F4818 #4F7F18

monochromatic

#05051A #0E104C #181B7F #2226B2 #383DD9

Accessibility & contrast

On white

13.98

#181B7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#181B7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B7F

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B7F	#FFFFFF	#000000	##FFFFFF
##181B7F	1.00	13.98	1.50	13.98
#FFFFFF	13.98	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003182

Deuteranopia (green-blind)

#00277D

Tritanopia (blue-blind)

#00394C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181b7f;
/* rgb */ color: rgb(24, 27, 127);
/* oklch */ color: oklch(30.8% 0.161 270.7);

Tailwind

colors: {
  custom: {
    50: '#6959a5',
    500: '#181b7f',
    950: '#000000',
  },
}

SCSS

$custom: #181b7f;
$custom-light: #6959a5;
$custom-dark: #000000;

JSON

{
  "hex": "#181b7f",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 127
  },
  "hsl": {
    "h": 238.252,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.30801,
    "c": 0.1614,
    "h": 270.7
  },
  "luminance": 0.0251
}

Semantic roles & 50–950 ramp

primary

#181B7F

secondary

#B3B03F

accent

#E63DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08030F

muted

#7A787F

Preview Lab

Preview with #181B7F

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

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