#181D73#181D73

#181D73 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.144 H 271.3°. Best body text is #FFFFFF at 14.36:1 contrast (WCAG AA passes).

Color values

HEX	#181D73
RGB	rgb(24, 29, 115)
HSL	hsl(237, 65%, 27%)
HSV	hsv(237, 79%, 45%)
CMYK	cmyk(79.1%, 74.8%, 0%, 54.9%)
CIE-LAB	lab(17.04, 30.19, -49.57)
CIE-LCH	lch(17.04, 58.04, 301.34°)
OKLab	oklab(29.74% 0.0031 -0.1435)
OKLCH	oklch(29.74% 0.144 271.3)
XYZ	xyz(3.9095, 2.3103, 16.4562)
Luminance	0.0231 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D73 #736E18

analogous

#184B73 #181D73 #401873

triadic

#181D73 #73181D #1D7318

tetradic

#181D73 #73184B #736E18 #187340

square

#181D73 #73184B #736E18 #187340

split-complementary

#181D73 #734018 #4B7318

monochromatic

#050619 #0D1040 #181D73 #232AA6 #313AD4

Accessibility & contrast

On white

14.36

#181D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#181D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D73

14.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D73	#FFFFFF	#000000	##FFFFFF
##181D73	1.00	14.36	1.46	14.36
#FFFFFF	14.36	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E76

Deuteranopia (green-blind)

#002671

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181d73;
/* rgb */ color: rgb(24, 29, 115);
/* oklch */ color: oklch(29.7% 0.144 271.3);

Tailwind

colors: {
  custom: {
    50: '#66599c',
    500: '#181d73',
    950: '#000000',
  },
}

SCSS

$custom: #181d73;
$custom-light: #66599c;
$custom-dark: #000000;

JSON

{
  "hex": "#181d73",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 115
  },
  "hsl": {
    "h": 236.703,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29738,
    "c": 0.14353,
    "h": 271.3
  },
  "luminance": 0.02311
}

Semantic roles & 50–950 ramp

primary

#181D73

secondary

#A8A23F

accent

#DF3FE8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181D73

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

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