#181F7A#181F7A

#181F7A is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.151 H 270.4°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#181F7A
RGB	rgb(24, 31, 122)
HSL	hsl(236, 67%, 29%)
HSV	hsv(236, 80%, 48%)
CMYK	cmyk(80.3%, 74.6%, 0%, 52.2%)
CIE-LAB	lab(18.27, 31.52, -52.03)
CIE-LCH	lch(18.27, 60.83, 301.20°)
OKLab	oklab(30.85% 0.0011 -0.1507)
OKLCH	oklch(30.85% 0.151 270.4)
XYZ	xyz(4.3783, 2.5788, 18.6756)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F7A #7A7318

analogous

#18507A #181F7A #42187A

triadic

#181F7A #7A181F #1F7A18

tetradic

#181F7A #7A1850 #7A7318 #187A42

square

#181F7A #7A1850 #7A7318 #187A42

split-complementary

#181F7A #7A4218 #507A18

monochromatic

#05061A #0E1247 #181F7A #222CAD #3541D7

Accessibility & contrast

On white

13.85

#181F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#181F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F7A

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F7A	#FFFFFF	#000000	##FFFFFF
##181F7A	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317D

Deuteranopia (green-blind)

#002878

Tritanopia (blue-blind)

#00394A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #181f7a;
/* rgb */ color: rgb(24, 31, 122);
/* oklch */ color: oklch(30.9% 0.151 270.4);

Tailwind

colors: {
  custom: {
    50: '#685ba1',
    500: '#181f7a',
    950: '#000000',
  },
}

SCSS

$custom: #181f7a;
$custom-light: #685ba1;
$custom-dark: #000000;

JSON

{
  "hex": "#181f7a",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 122
  },
  "hsl": {
    "h": 235.714,
    "s": 67.123,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30852,
    "c": 0.15067,
    "h": 270.4
  },
  "luminance": 0.02579
}

Semantic roles & 50–950 ramp

primary

#181F7A

secondary

#AFA73F

accent

#DE3EEA

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181F7A

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

Preview Lab → · Contrast checker → · Palette generator →