#181A9D#181A9D

#181A9D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.3% C 0.199 H 268.9°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#181A9D
RGB	rgb(24, 26, 157)
HSL	hsl(239, 73%, 35%)
HSV	hsv(239, 85%, 62%)
CMYK	cmyk(84.7%, 83.4%, 0%, 38.4%)
CIE-LAB	lab(21.46, 46.42, -68.64)
CIE-LCH	lch(21.46, 82.87, 304.07°)
OKLab	oklab(34.31% -0.0037 -0.1988)
OKLCH	oklch(34.31% 0.199 268.9)
XYZ	xyz(6.8298, 3.3665, 32.1816)
Luminance	0.0337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A9D #9D9B18

analogous

#185C9D #181A9D #59189D

triadic

#181A9D #9D181A #1A9D18

tetradic

#181A9D #9D185C #9D9B18 #189D59

square

#181A9D #9D185C #9D9B18 #189D59

split-complementary

#181A9D #9D5918 #5C9D18

monochromatic

#080833 #101168 #181A9D #2023D2 #4C4EE4

Accessibility & contrast

On white

12.55

#181A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#181A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A9D

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A9D	#FFFFFF	#000000	##FFFFFF
##181A9D	1.00	12.55	1.67	12.55
#FFFFFF	12.55	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003AA1

Deuteranopia (green-blind)

#002C9B

Tritanopia (blue-blind)

#00455D

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #181a9d;
/* rgb */ color: rgb(24, 26, 157);
/* oklch */ color: oklch(34.3% 0.199 268.9);

Tailwind

colors: {
  custom: {
    50: '#725abb',
    500: '#181a9d',
    950: '#000000',
  },
}

SCSS

$custom: #181a9d;
$custom-light: #725abb;
$custom-dark: #000000;

JSON

{
  "hex": "#181a9d",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 157
  },
  "hsl": {
    "h": 239.098,
    "s": 73.481,
    "l": 35.49
  },
  "oklch": {
    "l": 0.34307,
    "c": 0.1988,
    "h": 268.9
  },
  "luminance": 0.03367
}

Semantic roles & 50–950 ramp

primary

#181A9D

secondary

#C5C44B

accent

#ED38F0

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #181A9D

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

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