#181D4D#181D4D

#181D4D is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.8% C 0.088 H 274.0°. Best body text is #FFFFFF at 15.89:1 contrast (WCAG AA passes).

Color values

HEX	#181D4D
RGB	rgb(24, 29, 77)
HSL	hsl(234, 52%, 20%)
HSV	hsv(234, 69%, 30%)
CMYK	cmyk(68.8%, 62.3%, 0%, 69.8%)
CIE-LAB	lab(13.28, 15.30, -30.45)
CIE-LCH	lch(13.28, 34.08, 296.68°)
OKLab	oklab(25.84% 0.0062 -0.0875)
OKLCH	oklch(25.84% 0.088 274)
XYZ	xyz(2.1552, 1.6086, 7.2167)
Luminance	0.0161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D4D #4D4818

analogous

#18374D #181D4D #2E184D

triadic

#181D4D #4D181D #1D4D18

tetradic

#181D4D #4D1837 #4D4818 #184D2E

square

#181D4D #4D1837 #4D4818 #184D2E

split-complementary

#181D4D #4D2E18 #374D18

monochromatic

#070917 #090B1E #181D4D #272F7C #3540AA

Accessibility & contrast

On white

15.89

#181D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#181D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D4D

15.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D4D	#FFFFFF	#000000	##FFFFFF
##181D4D	1.00	15.89	1.32	15.89
#FFFFFF	15.89	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00254F

Deuteranopia (green-blind)

#00204C

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181d4d;
/* rgb */ color: rgb(24, 29, 77);
/* oklch */ color: oklch(25.8% 0.088 274.0);

Tailwind

colors: {
  custom: {
    50: '#5c587f',
    500: '#181d4d',
    950: '#000000',
  },
}

SCSS

$custom: #181d4d;
$custom-light: #5c587f;
$custom-dark: #000000;

JSON

{
  "hex": "#181d4d",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 77
  },
  "hsl": {
    "h": 234.34,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25844,
    "c": 0.08772,
    "h": 274
  },
  "luminance": 0.01609
}

Semantic roles & 50–950 ramp

primary

#181D4D

secondary

#847D3D

accent

#CE4CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181D4D

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

Preview Lab → · Contrast checker → · Palette generator →