#181F4E#181F4E

#181F4E is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.086 H 272.7°. Best body text is #FFFFFF at 15.62:1 contrast (WCAG AA passes).

Color values

HEX	#181F4E
RGB	rgb(24, 31, 78)
HSL	hsl(232, 53%, 20%)
HSV	hsv(232, 69%, 31%)
CMYK	cmyk(69.2%, 60.3%, 0%, 69.4%)
CIE-LAB	lab(13.97, 14.22, -30.03)
CIE-LCH	lch(13.97, 33.22, 295.33°)
OKLab	oklab(26.38% 0.004 -0.0862)
OKLCH	oklch(26.38% 0.086 272.7)
XYZ	xyz(2.2414, 1.7240, 7.4209)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181F4E #4E4718

analogous

#183A4E #181F4E #2C184E

triadic

#181F4E #4E181F #1F4E18

tetradic

#181F4E #4E183A #4E4718 #184E2C

square

#181F4E #4E183A #4E4718 #184E2C

split-complementary

#181F4E #4E2C18 #3A4E18

monochromatic

#070917 #0A0C1F #181F4E #26327D #3544AC

Accessibility & contrast

On white

15.62

#181F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#181F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181F4E

15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181F4E	#FFFFFF	#000000	##FFFFFF
##181F4E	1.00	15.62	1.34	15.62
#FFFFFF	15.62	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#012650

Deuteranopia (green-blind)

#00214D

Tritanopia (blue-blind)

#002A33

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #181f4e;
/* rgb */ color: rgb(24, 31, 78);
/* oklch */ color: oklch(26.4% 0.086 272.7);

Tailwind

colors: {
  custom: {
    50: '#5c5a80',
    500: '#181f4e',
    950: '#000000',
  },
}

SCSS

$custom: #181f4e;
$custom-light: #5c5a80;
$custom-dark: #000000;

JSON

{
  "hex": "#181f4e",
  "rgb": {
    "r": 24,
    "g": 31,
    "b": 78
  },
  "hsl": {
    "h": 232.222,
    "s": 52.941,
    "l": 20
  },
  "oklch": {
    "l": 0.26382,
    "c": 0.08632,
    "h": 272.7
  },
  "luminance": 0.01724
}

Semantic roles & 50–950 ramp

primary

#181F4E

secondary

#857B3D

accent

#CA4BDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #181F4E

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

Preview Lab → · Contrast checker → · Palette generator →