#181A50#181A50

#181A50 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.5% C 0.097 H 275.5°. Best body text is #FFFFFF at 16.12:1 contrast (WCAG AA passes).

Color values

HEX	#181A50
RGB	rgb(24, 26, 80)
HSL	hsl(238, 54%, 20%)
HSV	hsv(238, 70%, 31%)
CMYK	cmyk(70%, 67.5%, 0%, 68.6%)
CIE-LAB	lab(12.68, 18.72, -33.48)
CIE-LCH	lch(12.68, 38.36, 299.21°)
OKLab	oklab(25.49% 0.0093 -0.0964)
OKLCH	oklch(25.49% 0.097 275.5)
XYZ	xyz(2.1936, 1.5120, 7.7641)
Luminance	0.0151 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.36

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181A50 #504E18

analogous

#183650 #181A50 #321850

triadic

#181A50 #50181A #1A5018

tetradic

#181A50 #501836 #504E18 #185032

square

#181A50 #501836 #504E18 #185032

split-complementary

#181A50 #503218 #365018

monochromatic

#070818 #0A0B21 #181A50 #26297F #3439AE

Accessibility & contrast

On white

16.12

#181A50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181A50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181A50

16.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181A50	#FFFFFF	#000000	##FFFFFF
##181A50	1.00	16.12	1.30	16.12
#FFFFFF	16.12	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002352

Deuteranopia (green-blind)

#001E4F

Tritanopia (blue-blind)

#002732

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181a50;
/* rgb */ color: rgb(24, 26, 80);
/* oklch */ color: oklch(25.5% 0.097 275.5);

Tailwind

colors: {
  custom: {
    50: '#5d5682',
    500: '#181a50',
    950: '#000000',
  },
}

SCSS

$custom: #181a50;
$custom-light: #5d5682;
$custom-dark: #000000;

JSON

{
  "hex": "#181a50",
  "rgb": {
    "r": 24,
    "g": 26,
    "b": 80
  },
  "hsl": {
    "h": 237.857,
    "s": 53.846,
    "l": 20.392
  },
  "oklch": {
    "l": 0.25485,
    "c": 0.09687,
    "h": 275.5
  },
  "luminance": 0.01512
}

Semantic roles & 50–950 ramp

primary

#181A50

secondary

#87843D

accent

#D84BDD

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030A

muted

#79787C

Preview Lab

Preview with #181A50

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

Preview Lab → · Contrast checker → · Palette generator →