#181D75#181D75

#181D75 is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.0% C 0.146 H 271.1°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#181D75
RGB	rgb(24, 29, 117)
HSL	hsl(237, 66%, 28%)
HSV	hsv(237, 79%, 46%)
CMYK	cmyk(79.5%, 75.2%, 0%, 54.1%)
CIE-LAB	lab(17.26, 30.94, -50.50)
CIE-LCH	lch(17.26, 59.22, 301.49°)
OKLab	oklab(29.96% 0.0028 -0.1462)
OKLCH	oklch(29.96% 0.146 271.1)
XYZ	xyz(4.0258, 2.3568, 17.0689)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D75 #757018

analogous

#184C75 #181D75 #411875

triadic

#181D75 #75181D #1D7518

tetradic

#181D75 #75184C #757018 #187541

square

#181D75 #75184C #757018 #187541

split-complementary

#181D75 #754118 #4C7518

monochromatic

#050619 #0E1042 #181D75 #222AA8 #323BD5

Accessibility & contrast

On white

14.27

#181D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#181D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D75

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D75	#FFFFFF	#000000	##FFFFFF
##181D75	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F78

Deuteranopia (green-blind)

#002673

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #181d75;
/* rgb */ color: rgb(24, 29, 117);
/* oklch */ color: oklch(30.0% 0.146 271.1);

Tailwind

colors: {
  custom: {
    50: '#665a9e',
    500: '#181d75',
    950: '#000000',
  },
}

SCSS

$custom: #181d75;
$custom-light: #665a9e;
$custom-dark: #000000;

JSON

{
  "hex": "#181d75",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 117
  },
  "hsl": {
    "h": 236.774,
    "s": 65.957,
    "l": 27.647
  },
  "oklch": {
    "l": 0.29961,
    "c": 0.14622,
    "h": 271.1
  },
  "luminance": 0.02357
}

Semantic roles & 50–950 ramp

primary

#181D75

secondary

#AAA43F

accent

#E03FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181D75

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

Preview Lab → · Contrast checker → · Palette generator →