#181E4C#181E4C

#181E4C is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.0% C 0.085 H 273.4°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#181E4C
RGB	rgb(24, 30, 76)
HSL	hsl(233, 52%, 20%)
HSV	hsv(233, 68%, 30%)
CMYK	cmyk(68.4%, 60.5%, 0%, 70.2%)
CIE-LAB	lab(13.50, 14.15, -29.42)
CIE-LCH	lch(13.50, 32.64, 295.69°)
OKLab	oklab(25.98% 0.005 -0.0844)
OKLCH	oklch(25.98% 0.085 273.4)
XYZ	xyz(2.1450, 1.6444, 7.0404)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.93

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181E4C #4C4618

analogous

#18384C #181E4C #2C184C

triadic

#181E4C #4C181E #1E4C18

tetradic

#181E4C #4C1838 #4C4618 #184C2C

square

#181E4C #4C1838 #4C4618 #184C2C

split-complementary

#181E4C #4C2C18 #384C18

monochromatic

#070917 #090C1D #181E4C #27307B #3543A9

Accessibility & contrast

On white

15.80

#181E4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181E4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181E4C

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181E4C	#FFFFFF	#000000	##FFFFFF
##181E4C	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01254E

Deuteranopia (green-blind)

#00204B

Tritanopia (blue-blind)

#002931

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181e4c;
/* rgb */ color: rgb(24, 30, 76);
/* oklch */ color: oklch(26.0% 0.085 273.4);

Tailwind

colors: {
  custom: {
    50: '#5b597e',
    500: '#181e4c',
    950: '#000000',
  },
}

SCSS

$custom: #181e4c;
$custom-light: #5b597e;
$custom-dark: #000000;

JSON

{
  "hex": "#181e4c",
  "rgb": {
    "r": 24,
    "g": 30,
    "b": 76
  },
  "hsl": {
    "h": 233.077,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25978,
    "c": 0.08459,
    "h": 273.4
  },
  "luminance": 0.01645
}

Semantic roles & 50–950 ramp

primary

#181E4C

secondary

#837B3D

accent

#CB4CDB

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181E4C

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

Preview Lab → · Contrast checker → · Palette generator →