#181C48#181C48

#181C48 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.2% C 0.081 H 275.0°. Best body text is #FFFFFF at 16.17:1 contrast (WCAG AA passes).

Color values

HEX	#181C48
RGB	rgb(24, 28, 72)
HSL	hsl(235, 50%, 19%)
HSV	hsv(235, 67%, 28%)
CMYK	cmyk(66.7%, 61.1%, 0%, 71.8%)
CIE-LAB	lab(12.56, 14.04, -28.17)
CIE-LCH	lch(12.56, 31.48, 296.49°)
OKLab	oklab(25.17% 0.0071 -0.0808)
OKLCH	oklch(25.17% 0.081 275)
XYZ	xyz(1.9613, 1.4924, 6.3143)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.37

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181C48 #484418

analogous

#183448 #181C48 #2C1848

triadic

#181C48 #48181C #1C4818

tetradic

#181C48 #481834 #484418 #18482C

square

#181C48 #481834 #484418 #18482C

split-complementary

#181C48 #482C18 #344818

monochromatic

#080917 #090A1A #181C48 #272E76 #3740A4

Accessibility & contrast

On white

16.17

#181C48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#181C48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181C48

16.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181C48	#FFFFFF	#000000	##FFFFFF
##181C48	1.00	16.17	1.30	16.17
#FFFFFF	16.17	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01234A

Deuteranopia (green-blind)

#001F47

Tritanopia (blue-blind)

#00262E

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #181c48;
/* rgb */ color: rgb(24, 28, 72);
/* oklch */ color: oklch(25.2% 0.081 275.0);

Tailwind

colors: {
  custom: {
    50: '#5b577b',
    500: '#181c48',
    950: '#000000',
  },
}

SCSS

$custom: #181c48;
$custom-light: #5b577b;
$custom-dark: #000000;

JSON

{
  "hex": "#181c48",
  "rgb": {
    "r": 24,
    "g": 28,
    "b": 72
  },
  "hsl": {
    "h": 235,
    "s": 50,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25171,
    "c": 0.08112,
    "h": 275
  },
  "luminance": 0.01493
}

Semantic roles & 50–950 ramp

primary

#181C48

secondary

#7F793D

accent

#CE4EDA

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #181C48

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

Preview Lab → · Contrast checker → · Palette generator →