#181C4D#181C4D

#181C4D is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.6% C 0.089 H 274.7°. Best body text is #FFFFFF at 16.00:1 contrast (WCAG AA passes).

Color values

HEX	#181C4D
RGB	rgb(24, 28, 77)
HSL	hsl(235, 52%, 20%)
HSV	hsv(235, 69%, 30%)
CMYK	cmyk(68.8%, 63.6%, 0%, 69.8%)
CIE-LAB	lab(12.99, 16.05, -30.93)
CIE-LCH	lch(12.99, 34.85, 297.42°)
OKLab	oklab(25.62% 0.0073 -0.0889)
OKLCH	oklch(25.62% 0.089 274.7)
XYZ	xyz(2.1311, 1.5603, 7.2086)
Luminance	0.0156 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C4D #4D4918

analogous

#18364D #181C4D #2F184D

triadic

#181C4D #4D181C #1C4D18

tetradic

#181C4D #4D1836 #4D4918 #184D2F

square

#181C4D #4D1836 #4D4918 #184D2F

split-complementary

#181C4D #4D2F18 #364D18

monochromatic

#070817 #090B1E #181C4D #272D7C #353EAA

Accessibility & contrast

On white

16.00

#181C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#181C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C4D

16.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C4D	#FFFFFF	#000000	##FFFFFF
##181C4D	1.00	16.00	1.31	16.00
#FFFFFF	16.00	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244F

Deuteranopia (green-blind)

#001F4C

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #181c4d;
/* rgb */ color: rgb(24, 28, 77);
/* oklch */ color: oklch(25.6% 0.089 274.7);

Tailwind

colors: {
  custom: {
    50: '#5c587f',
    500: '#181c4d',
    950: '#000000',
  },
}

SCSS

$custom: #181c4d;
$custom-light: #5c587f;
$custom-dark: #000000;

JSON

{
  "hex": "#181c4d",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 77
  },
  "hsl": {
    "h": 235.472,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.25624,
    "c": 0.08922,
    "h": 274.7
  },
  "luminance": 0.01561
}

Semantic roles & 50–950 ramp

primary

#181C4D

secondary

#847E3D

accent

#D14CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181C4D

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

Preview Lab → · Contrast checker → · Palette generator →