#181D50#181D50

#181D50 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.1% C 0.093 H 273.9°. Best body text is #FFFFFF at 15.78:1 contrast (WCAG AA passes).

Color values

HEX	#181D50
RGB	rgb(24, 29, 80)
HSL	hsl(235, 54%, 20%)
HSV	hsv(235, 70%, 31%)
CMYK	cmyk(70%, 63.7%, 0%, 68.6%)
CIE-LAB	lab(13.54, 16.51, -32.08)
CIE-LCH	lch(13.54, 36.08, 297.23°)
OKLab	oklab(26.12% 0.0062 -0.0923)
OKLCH	oklch(26.12% 0.093 273.9)
XYZ	xyz(2.2635, 1.6519, 7.7874)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181D50 #504B18

analogous

#183950 #181D50 #2F1850

triadic

#181D50 #50181D #1D5018

tetradic

#181D50 #501839 #504B18 #18502F

square

#181D50 #501839 #504B18 #18502F

split-complementary

#181D50 #502F18 #395018

monochromatic

#070918 #0A0C21 #181D50 #262E7F #343FAE

Accessibility & contrast

On white

15.78

#181D50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181D50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181D50

15.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181D50	#FFFFFF	#000000	##FFFFFF
##181D50	1.00	15.78	1.33	15.78
#FFFFFF	15.78	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002552

Deuteranopia (green-blind)

#00204F

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181d50;
/* rgb */ color: rgb(24, 29, 80);
/* oklch */ color: oklch(26.1% 0.093 273.9);

Tailwind

colors: {
  custom: {
    50: '#5d5882',
    500: '#181d50',
    950: '#000000',
  },
}

SCSS

$custom: #181d50;
$custom-light: #5d5882;
$custom-dark: #000000;

JSON

{
  "hex": "#181d50",
  "rgb": {
    "r": 24,
    "g": 29,
    "b": 80
  },
  "hsl": {
    "h": 234.643,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.2612,
    "c": 0.09251,
    "h": 273.9
  },
  "luminance": 0.01652
}

Semantic roles & 50–950 ramp

primary

#181D50

secondary

#87803D

accent

#D04BDD

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #181D50

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

Preview Lab → · Contrast checker → · Palette generator →