#181D84#181D84

#181D84 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.7% C 0.166 H 270.1°. Best body text is #FFFFFF at 13.57:1 contrast (WCAG AA passes).

Color values

HEX	#181D84
RGB	rgb(24, 29, 132)
HSL	hsl(237, 69%, 31%)
HSV	hsv(237, 82%, 52%)
CMYK	cmyk(81.8%, 78%, 0%, 48.2%)
CIE-LAB	lab(18.96, 36.38, -57.24)
CIE-LCH	lch(18.96, 67.82, 302.44°)
OKLab	oklab(31.68% 0.0003 -0.1658)
OKLCH	oklch(31.68% 0.166 270.1)
XYZ	xyz(4.9795, 2.7383, 22.0914)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D84 #847F18

analogous

#185384 #181D84 #491884

triadic

#181D84 #84181D #1D8418

tetradic

#181D84 #841853 #847F18 #188449

square

#181D84 #841853 #847F18 #188449

split-complementary

#181D84 #844918 #538418

monochromatic

#05061C #0F1250 #181D84 #2128B8 #3B42DB

Accessibility & contrast

On white

13.57

#181D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#181D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D84

13.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D84	#FFFFFF	#000000	##FFFFFF
##181D84	1.00	13.57	1.55	13.57
#FFFFFF	13.57	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003387

Deuteranopia (green-blind)

#002982

Tritanopia (blue-blind)

#003C4F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181d84;
/* rgb */ color: rgb(24, 29, 132);
/* oklch */ color: oklch(31.7% 0.166 270.1);

Tailwind

colors: {
  custom: {
    50: '#6b5aa9',
    500: '#181d84',
    950: '#000000',
  },
}

SCSS

$custom: #181d84;
$custom-light: #6b5aa9;
$custom-dark: #000000;

JSON

{
  "hex": "#181d84",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 132
  },
  "hsl": {
    "h": 237.222,
    "s": 69.231,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3168,
    "c": 0.16579,
    "h": 270.1
  },
  "luminance": 0.02739
}

Semantic roles & 50–950 ramp

primary

#181D84

secondary

#B8B240

accent

#E43CEC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181D84

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

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