#181D90#181D90

#181D90 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.1% C 0.181 H 269.4°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#181D90
RGB	rgb(24, 29, 144)
HSL	hsl(238, 71%, 33%)
HSV	hsv(238, 83%, 56%)
CMYK	cmyk(83.3%, 79.9%, 0%, 43.5%)
CIE-LAB	lab(20.38, 40.57, -62.40)
CIE-LCH	lch(20.38, 74.43, 303.03°)
OKLab	oklab(33.1% -0.0018 -0.1808)
OKLCH	oklch(33.1% 0.181 269.4)
XYZ	xyz(5.8484, 3.0858, 26.6675)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D90 #908B18

analogous

#185990 #181D90 #4F1890

triadic

#181D90 #90181D #1D9018

tetradic

#181D90 #901859 #908B18 #18904F

square

#181D90 #901859 #908B18 #18904F

split-complementary

#181D90 #904F18 #599018

monochromatic

#070827 #0F125C #181D90 #2128C4 #4349E0

Accessibility & contrast

On white

12.98

#181D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#181D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D90

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D90	#FFFFFF	#000000	##FFFFFF
##181D90	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003793

Deuteranopia (green-blind)

#002B8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #181d90;
/* rgb */ color: rgb(24, 29, 144);
/* oklch */ color: oklch(33.1% 0.181 269.4);

Tailwind

colors: {
  custom: {
    50: '#6e5bb2',
    500: '#181d90',
    950: '#000000',
  },
}

SCSS

$custom: #181d90;
$custom-light: #6e5bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#181d90",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 144
  },
  "hsl": {
    "h": 237.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.33097,
    "c": 0.18077,
    "h": 269.4
  },
  "luminance": 0.03087
}

Semantic roles & 50–950 ramp

primary

#181D90

secondary

#C0BB43

accent

#E73AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #181D90

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

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