#181B72#181B72

#181B72 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.144 H 271.7°. Best body text is #FFFFFF at 14.60:1 contrast (WCAG AA passes).

Color values

HEX	#181B72
RGB	rgb(24, 27, 114)
HSL	hsl(238, 65%, 27%)
HSV	hsv(238, 79%, 45%)
CMYK	cmyk(78.9%, 76.3%, 0%, 55.3%)
CIE-LAB	lab(16.47, 31.10, -49.87)
CIE-LCH	lch(16.47, 58.77, 301.95°)
OKLab	oklab(29.3% 0.0043 -0.1443)
OKLCH	oklch(29.3% 0.144 271.7)
XYZ	xyz(3.8049, 2.1926, 16.1390)
Luminance	0.0219 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B72 #726F18

analogous

#184872 #181B72 #421872

triadic

#181B72 #72181B #1B7218

tetradic

#181B72 #721848 #726F18 #187242

square

#181B72 #721848 #726F18 #187242

split-complementary

#181B72 #724218 #487218

monochromatic

#050619 #0D0F3F #181B72 #2327A5 #3136D4

Accessibility & contrast

On white

14.60

#181B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#181B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B72

14.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B72	#FFFFFF	#000000	##FFFFFF
##181B72	1.00	14.60	1.44	14.60
#FFFFFF	14.60	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D75

Deuteranopia (green-blind)

#002470

Tritanopia (blue-blind)

#003445

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181b72;
/* rgb */ color: rgb(24, 27, 114);
/* oklch */ color: oklch(29.3% 0.144 271.7);

Tailwind

colors: {
  custom: {
    50: '#66589c',
    500: '#181b72',
    950: '#000000',
  },
}

SCSS

$custom: #181b72;
$custom-light: #66589c;
$custom-dark: #000000;

JSON

{
  "hex": "#181b72",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 114
  },
  "hsl": {
    "h": 238,
    "s": 65.217,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29296,
    "c": 0.14441,
    "h": 271.7
  },
  "luminance": 0.02193
}

Semantic roles & 50–950 ramp

primary

#181B72

secondary

#A7A43E

accent

#E340E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181B72

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

Preview Lab → · Contrast checker → · Palette generator →