#181D7D#181D7D

#181D7D is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.157 H 270.6°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#181D7D
RGB	rgb(24, 29, 125)
HSL	hsl(237, 68%, 29%)
HSV	hsv(237, 81%, 49%)
CMYK	cmyk(80.8%, 76.8%, 0%, 51%)
CIE-LAB	lab(18.16, 33.87, -54.14)
CIE-LCH	lch(18.16, 63.86, 302.03°)
OKLab	oklab(30.87% 0.0015 -0.1568)
OKLCH	oklch(30.87% 0.157 270.6)
XYZ	xyz(4.5165, 2.5531, 19.6528)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D7D #7D7818

analogous

#18507D #181D7D #46187D

triadic

#181D7D #7D181D #1D7D18

tetradic

#181D7D #7D1850 #7D7818 #187D46

square

#181D7D #7D1850 #7D7818 #187D46

split-complementary

#181D7D #7D4618 #507D18

monochromatic

#05061A #0E114A #181D7D #2229B0 #373FD9

Accessibility & contrast

On white

13.90

#181D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#181D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D7D

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D7D	#FFFFFF	#000000	##FFFFFF
##181D7D	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003180

Deuteranopia (green-blind)

#00277B

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #181d7d;
/* rgb */ color: rgb(24, 29, 125);
/* oklch */ color: oklch(30.9% 0.157 270.6);

Tailwind

colors: {
  custom: {
    50: '#695aa4',
    500: '#181d7d',
    950: '#000000',
  },
}

SCSS

$custom: #181d7d;
$custom-light: #695aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#181d7d",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 125
  },
  "hsl": {
    "h": 237.03,
    "s": 67.785,
    "l": 29.216
  },
  "oklch": {
    "l": 0.3087,
    "c": 0.15679,
    "h": 270.6
  },
  "luminance": 0.02554
}

Semantic roles & 50–950 ramp

primary

#181D7D

secondary

#B2AC3F

accent

#E23DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #181D7D

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

Preview Lab → · Contrast checker → · Palette generator →