#181B61#181B61

#181B61 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.4% C 0.121 H 273.3°. Best body text is #FFFFFF at 15.35:1 contrast (WCAG AA passes).

Color values

HEX	#181B61
RGB	rgb(24, 27, 97)
HSL	hsl(238, 60%, 24%)
HSV	hsv(238, 75%, 38%)
CMYK	cmyk(75.3%, 72.2%, 0%, 62%)
CIE-LAB	lab(14.63, 24.68, -41.75)
CIE-LCH	lch(14.63, 48.50, 300.58°)
OKLab	oklab(27.42% 0.0069 -0.1207)
OKLCH	oklch(27.42% 0.121 273.3)
XYZ	xyz(2.9256, 1.8408, 11.5081)
Luminance	0.0184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B61 #615E18

analogous

#183F61 #181B61 #391861

triadic

#181B61 #61181B #1B6118

tetradic

#181B61 #61183F #615E18 #186139

square

#181B61 #61183F #615E18 #186139

split-complementary

#181B61 #613918 #3F6118

monochromatic

#060719 #0C0D30 #181B61 #242992 #3036C3

Accessibility & contrast

On white

15.35

#181B61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#181B61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B61

15.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B61	#FFFFFF	#000000	##FFFFFF
##181B61	1.00	15.35	1.37	15.35
#FFFFFF	15.35	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002863

Deuteranopia (green-blind)

#002160

Tritanopia (blue-blind)

#002E3B

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #181b61;
/* rgb */ color: rgb(24, 27, 97);
/* oklch */ color: oklch(27.4% 0.121 273.3);

Tailwind

colors: {
  custom: {
    50: '#61578f',
    500: '#181b61',
    950: '#000000',
  },
}

SCSS

$custom: #181b61;
$custom-light: #61578f;
$custom-dark: #000000;

JSON

{
  "hex": "#181b61",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 97
  },
  "hsl": {
    "h": 237.534,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.27421,
    "c": 0.12087,
    "h": 273.3
  },
  "luminance": 0.01841
}

Semantic roles & 50–950 ramp

primary

#181B61

secondary

#97943D

accent

#DD44E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #181B61

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

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