#181B89#181B89

#181B89 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.0% C 0.174 H 270.0°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#181B89
RGB	rgb(24, 27, 137)
HSL	hsl(238, 70%, 32%)
HSV	hsv(238, 82%, 54%)
CMYK	cmyk(82.5%, 80.3%, 0%, 46.3%)
CIE-LAB	lab(19.16, 39.28, -60.07)
CIE-LCH	lch(19.16, 71.77, 303.18°)
OKLab	oklab(31.99% 0.0001 -0.174)
OKLCH	oklch(31.99% 0.174 270)
XYZ	xyz(5.2824, 2.7836, 23.9209)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B89 #898618

analogous

#185489 #181B89 #4E1889

triadic

#181B89 #89181B #1B8918

tetradic

#181B89 #891854 #898618 #18894E

square

#181B89 #891854 #898618 #18894E

split-complementary

#181B89 #894E18 #548918

monochromatic

#060621 #0F1155 #181B89 #2125BD #3E42DD

Accessibility & contrast

On white

13.49

#181B89 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#181B89 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B89

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B89	#FFFFFF	#000000	##FFFFFF
##181B89	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00348C

Deuteranopia (green-blind)

#002987

Tritanopia (blue-blind)

#003D52

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #181b89;
/* rgb */ color: rgb(24, 27, 137);
/* oklch */ color: oklch(32.0% 0.174 270.0);

Tailwind

colors: {
  custom: {
    50: '#6c59ad',
    500: '#181b89',
    950: '#000000',
  },
}

SCSS

$custom: #181b89;
$custom-light: #6c59ad;
$custom-dark: #000000;

JSON

{
  "hex": "#181b89",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 137
  },
  "hsl": {
    "h": 238.407,
    "s": 70.186,
    "l": 31.569
  },
  "oklch": {
    "l": 0.31989,
    "c": 0.17397,
    "h": 270
  },
  "luminance": 0.02784
}

Semantic roles & 50–950 ramp

primary

#181B89

secondary

#BDB940

accent

#E83BED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #181B89

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

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