#181C9D#181C9D

#181C9D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 34.5% C 0.197 H 268.8°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#181C9D
RGB	rgb(24, 28, 157)
HSL	hsl(238, 73%, 35%)
HSV	hsv(238, 85%, 62%)
CMYK	cmyk(84.7%, 82.2%, 0%, 38.4%)
CIE-LAB	lab(21.79, 45.44, -68.08)
CIE-LCH	lch(21.79, 81.85, 303.72°)
OKLab	oklab(34.54% -0.0041 -0.1972)
OKLCH	oklch(34.54% 0.197 268.8)
XYZ	xyz(6.8757, 3.4582, 32.1969)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C9D #9D9918

analogous

#185F9D #181C9D #56189D

triadic

#181C9D #9D181C #1C9D18

tetradic

#181C9D #9D185F #9D9918 #189D56

square

#181C9D #9D185F #9D9918 #189D56

split-complementary

#181C9D #9D5618 #5F9D18

monochromatic

#080933 #101368 #181C9D #2025D2 #4C50E4

Accessibility & contrast

On white

12.41

#181C9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#181C9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C9D

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C9D	#FFFFFF	#000000	##FFFFFF
##181C9D	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003BA1

Deuteranopia (green-blind)

#002D9B

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #181c9d;
/* rgb */ color: rgb(24, 28, 157);
/* oklch */ color: oklch(34.5% 0.197 268.8);

Tailwind

colors: {
  custom: {
    50: '#725bbb',
    500: '#181c9d',
    950: '#000000',
  },
}

SCSS

$custom: #181c9d;
$custom-light: #725bbb;
$custom-dark: #000000;

JSON

{
  "hex": "#181c9d",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 157
  },
  "hsl": {
    "h": 238.195,
    "s": 73.481,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34542,
    "c": 0.19723,
    "h": 268.8
  },
  "luminance": 0.03459
}

Semantic roles & 50–950 ramp

primary

#181C9D

secondary

#C5C24B

accent

#EB38F0

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #181C9D

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

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