#181B90#181B90

#181B90 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.183 H 269.6°. Best body text is #FFFFFF at 13.14:1 contrast (WCAG AA passes).

Color values

HEX	#181B90
RGB	rgb(24, 27, 144)
HSL	hsl(239, 71%, 33%)
HSV	hsv(239, 83%, 56%)
CMYK	cmyk(83.3%, 81.3%, 0%, 43.5%)
CIE-LAB	lab(20.01, 41.65, -63.03)
CIE-LCH	lch(20.01, 75.55, 303.46°)
OKLab	oklab(32.83% -0.0013 -0.1825)
OKLCH	oklch(32.83% 0.183 269.6)
XYZ	xyz(5.8009, 2.9910, 26.6517)
Luminance	0.0299 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B90 #908D18

analogous

#185790 #181B90 #511890

triadic

#181B90 #90181B #1B9018

tetradic

#181B90 #901857 #908D18 #189051

square

#181B90 #901857 #908D18 #189051

split-complementary

#181B90 #905118 #579018

monochromatic

#070727 #0F115C #181B90 #2125C4 #4347E0

Accessibility & contrast

On white

13.14

#181B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#181B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B90

13.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B90	#FFFFFF	#000000	##FFFFFF
##181B90	1.00	13.14	1.60	13.14
#FFFFFF	13.14	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003693

Deuteranopia (green-blind)

#002A8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #181b90;
/* rgb */ color: rgb(24, 27, 144);
/* oklch */ color: oklch(32.8% 0.183 269.6);

Tailwind

colors: {
  custom: {
    50: '#6e5ab2',
    500: '#181b90',
    950: '#000000',
  },
}

SCSS

$custom: #181b90;
$custom-light: #6e5ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#181b90",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 144
  },
  "hsl": {
    "h": 238.5,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.32833,
    "c": 0.18254,
    "h": 269.6
  },
  "luminance": 0.02992
}

Semantic roles & 50–950 ramp

primary

#181B90

secondary

#C0BD43

accent

#EA3AEE

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #181B90

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

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