#181A4D#181A4D

#181A4D is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.092 H 275.8°. Best body text is #FFFFFF at 16.23:1 contrast (WCAG AA passes).

Color values

HEX	#181A4D
RGB	rgb(24, 26, 77)
HSL	hsl(238, 52%, 20%)
HSV	hsv(238, 69%, 30%)
CMYK	cmyk(68.8%, 66.2%, 0%, 69.8%)
CIE-LAB	lab(12.41, 17.53, -31.87)
CIE-LCH	lch(12.41, 36.37, 298.81°)
OKLab	oklab(25.2% 0.0094 -0.0917)
OKLCH	oklch(25.2% 0.092 275.8)
XYZ	xyz(2.0852, 1.4686, 7.1933)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A4D #4D4B18

analogous

#18354D #181A4D #31184D

triadic

#181A4D #4D181A #1A4D18

tetradic

#181A4D #4D1835 #4D4B18 #184D31

square

#181A4D #4D1835 #4D4B18 #184D31

split-complementary

#181A4D #4D3118 #354D18

monochromatic

#070817 #090A1E #181A4D #272A7C #353AAA

Accessibility & contrast

On white

16.23

#181A4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181A4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A4D

16.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A4D	#FFFFFF	#000000	##FFFFFF
##181A4D	1.00	16.23	1.29	16.23
#FFFFFF	16.23	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00234F

Deuteranopia (green-blind)

#001E4C

Tritanopia (blue-blind)

#002730

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181a4d;
/* rgb */ color: rgb(24, 26, 77);
/* oklch */ color: oklch(25.2% 0.092 275.8);

Tailwind

colors: {
  custom: {
    50: '#5c567f',
    500: '#181a4d',
    950: '#000000',
  },
}

SCSS

$custom: #181a4d;
$custom-light: #5c567f;
$custom-dark: #000000;

JSON

{
  "hex": "#181a4d",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 77
  },
  "hsl": {
    "h": 237.736,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25195,
    "c": 0.09219,
    "h": 275.8
  },
  "luminance": 0.01469
}

Semantic roles & 50–950 ramp

primary

#181A4D

secondary

#84813D

accent

#D64CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181A4D

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

Preview Lab → · Contrast checker → · Palette generator →