#181D85#181D85

#181D85 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.8% C 0.167 H 270.1°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#181D85
RGB	rgb(24, 29, 133)
HSL	hsl(237, 69%, 31%)
HSV	hsv(237, 82%, 52%)
CMYK	cmyk(82%, 78.2%, 0%, 47.8%)
CIE-LAB	lab(19.08, 36.74, -57.68)
CIE-LCH	lch(19.08, 68.38, 302.50°)
OKLab	oklab(31.8% 0.0002 -0.1671)
OKLCH	oklch(31.8% 0.167 270.1)
XYZ	xyz(5.0482, 2.7658, 22.4535)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D85 #858018

analogous

#185385 #181D85 #491885

triadic

#181D85 #85181D #1D8518

tetradic

#181D85 #851853 #858018 #188549

square

#181D85 #851853 #858018 #188549

split-complementary

#181D85 #854918 #538518

monochromatic

#05061D #0F1251 #181D85 #2128B9 #3C43DC

Accessibility & contrast

On white

13.52

#181D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#181D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D85

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D85	#FFFFFF	#000000	##FFFFFF
##181D85	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003488

Deuteranopia (green-blind)

#002983

Tritanopia (blue-blind)

#003C50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181d85;
/* rgb */ color: rgb(24, 29, 133);
/* oklch */ color: oklch(31.8% 0.167 270.1);

Tailwind

colors: {
  custom: {
    50: '#6b5aaa',
    500: '#181d85',
    950: '#000000',
  },
}

SCSS

$custom: #181d85;
$custom-light: #6b5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#181d85",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 133
  },
  "hsl": {
    "h": 237.248,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31797,
    "c": 0.16706,
    "h": 270.1
  },
  "luminance": 0.02766
}

Semantic roles & 50–950 ramp

primary

#181D85

secondary

#B9B340

accent

#E43CEC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181D85

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

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