#181F4D#181F4D

#181F4D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.085 H 272.7°. Best body text is #FFFFFF at 15.65:1 contrast (WCAG AA passes).

Color values

HEX	#181F4D
RGB	rgb(24, 31, 77)
HSL	hsl(232, 52%, 20%)
HSV	hsv(232, 69%, 30%)
CMYK	cmyk(68.8%, 59.7%, 0%, 69.8%)
CIE-LAB	lab(13.88, 13.81, -29.48)
CIE-LCH	lch(13.88, 32.55, 295.10°)
OKLab	oklab(26.29% 0.004 -0.0846)
OKLCH	oklch(26.29% 0.085 272.7)
XYZ	xyz(2.2058, 1.7098, 7.2335)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.22

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F4D #4D4618

analogous

#183A4D #181F4D #2B184D

triadic

#181F4D #4D181F #1F4D18

tetradic

#181F4D #4D183A #4D4618 #184D2B

square

#181F4D #4D183A #4D4618 #184D2B

split-complementary

#181F4D #4D2B18 #3A4D18

monochromatic

#070917 #090C1E #181F4D #27327C #3545AA

Accessibility & contrast

On white

15.65

#181F4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181F4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F4D

15.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F4D	#FFFFFF	#000000	##FFFFFF
##181F4D	1.00	15.65	1.34	15.65
#FFFFFF	15.65	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02264F

Deuteranopia (green-blind)

#00214C

Tritanopia (blue-blind)

#002A32

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181f4d;
/* rgb */ color: rgb(24, 31, 77);
/* oklch */ color: oklch(26.3% 0.085 272.7);

Tailwind

colors: {
  custom: {
    50: '#5c5a7f',
    500: '#181f4d',
    950: '#000000',
  },
}

SCSS

$custom: #181f4d;
$custom-light: #5c5a7f;
$custom-dark: #000000;

JSON

{
  "hex": "#181f4d",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 77
  },
  "hsl": {
    "h": 232.075,
    "s": 52.475,
    "l": 19.804
  },
  "oklch": {
    "l": 0.26294,
    "c": 0.0847,
    "h": 272.7
  },
  "luminance": 0.0171
}

Semantic roles & 50–950 ramp

primary

#181F4D

secondary

#847A3D

accent

#C94CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181F4D

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

Preview Lab → · Contrast checker → · Palette generator →