#181B84#181B84

#181B84 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.4% C 0.168 H 270.3°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#181B84
RGB	rgb(24, 27, 132)
HSL	hsl(238, 69%, 31%)
HSV	hsv(238, 82%, 52%)
CMYK	cmyk(81.8%, 79.5%, 0%, 48.2%)
CIE-LAB	lab(18.56, 37.55, -57.92)
CIE-LCH	lch(18.56, 69.02, 302.96°)
OKLab	oklab(31.39% 0.001 -0.1677)
OKLCH	oklch(31.39% 0.168 270.3)
XYZ	xyz(4.9321, 2.6434, 22.0756)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B84 #848118

analogous

#185184 #181B84 #4B1884

triadic

#181B84 #84181B #1B8418

tetradic

#181B84 #841851 #848118 #18844B

square

#181B84 #841851 #848118 #18844B

split-complementary

#181B84 #844B18 #518418

monochromatic

#05061C #0F1050 #181B84 #2126B8 #3B3FDB

Accessibility & contrast

On white

13.74

#181B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#181B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B84

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B84	#FFFFFF	#000000	##FFFFFF
##181B84	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003387

Deuteranopia (green-blind)

#002882

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181b84;
/* rgb */ color: rgb(24, 27, 132);
/* oklch */ color: oklch(31.4% 0.168 270.3);

Tailwind

colors: {
  custom: {
    50: '#6b59a9',
    500: '#181b84',
    950: '#000000',
  },
}

SCSS

$custom: #181b84;
$custom-light: #6b59a9;
$custom-dark: #000000;

JSON

{
  "hex": "#181b84",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 132
  },
  "hsl": {
    "h": 238.333,
    "s": 69.231,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31392,
    "c": 0.16773,
    "h": 270.3
  },
  "luminance": 0.02644
}

Semantic roles & 50–950 ramp

primary

#181B84

secondary

#B8B540

accent

#E73CEC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181B84

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

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