#181F4F#181F4F

#181F4F is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.5% C 0.088 H 272.6°. Best body text is #FFFFFF at 15.58:1 contrast (WCAG AA passes).

Color values

HEX	#181F4F
RGB	rgb(24, 31, 79)
HSL	hsl(232, 53%, 20%)
HSV	hsv(232, 70%, 31%)
CMYK	cmyk(69.6%, 60.8%, 0%, 69%)
CIE-LAB	lab(14.05, 14.62, -30.58)
CIE-LCH	lch(14.05, 33.89, 295.56°)
OKLab	oklab(26.47% 0.0041 -0.0878)
OKLCH	oklch(26.47% 0.088 272.6)
XYZ	xyz(2.2775, 1.7385, 7.6112)
Luminance	0.0174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F4F #4F4818

analogous

#183A4F #181F4F #2D184F

triadic

#181F4F #4F181F #1F4F18

tetradic

#181F4F #4F183A #4F4818 #184F2D

square

#181F4F #4F183A #4F4818 #184F2D

split-complementary

#181F4F #4F2D18 #3A4F18

monochromatic

#070917 #0A0D20 #181F4F #26317E #3544AD

Accessibility & contrast

On white

15.58

#181F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#181F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F4F

15.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F4F	#FFFFFF	#000000	##FFFFFF
##181F4F	1.00	15.58	1.35	15.58
#FFFFFF	15.58	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002651

Deuteranopia (green-blind)

#00214E

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181f4f;
/* rgb */ color: rgb(24, 31, 79);
/* oklch */ color: oklch(26.5% 0.088 272.6);

Tailwind

colors: {
  custom: {
    50: '#5c5a81',
    500: '#181f4f',
    950: '#000000',
  },
}

SCSS

$custom: #181f4f;
$custom-light: #5c5a81;
$custom-dark: #000000;

JSON

{
  "hex": "#181f4f",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 79
  },
  "hsl": {
    "h": 232.364,
    "s": 53.398,
    "l": 20.196
  },
  "oklch": {
    "l": 0.26471,
    "c": 0.08793,
    "h": 272.6
  },
  "luminance": 0.01739
}

Semantic roles & 50–950 ramp

primary

#181F4F

secondary

#867D3D

accent

#CA4BDD

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181F4F

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

Preview Lab → · Contrast checker → · Palette generator →