#181755#181755

#181755 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.109 H 276.1°. Best body text is #FFFFFF at 16.25:1 contrast (WCAG AA passes).

Color values

HEX	#181755
RGB	rgb(24, 23, 85)
HSL	hsl(241, 57%, 21%)
HSV	hsv(241, 73%, 33%)
CMYK	cmyk(71.8%, 72.9%, 0%, 66.7%)
CIE-LAB	lab(12.37, 22.81, -37.40)
CIE-LCH	lch(12.37, 43.81, 301.37°)
OKLab	oklab(25.41% 0.0115 -0.108)
OKLCH	oklch(25.41% 0.109 276.1)
XYZ	xyz(2.3222, 1.4627, 8.7525)
Luminance	0.0146 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181755 #545517

analogous

#173555 #181755 #371755

triadic

#181755 #551817 #175518

tetradic

#181755 #551735 #545517 #175537

square

#181755 #551735 #545517 #175537

split-complementary

#181755 #553717 #355517

monochromatic

#070718 #0A0A25 #181755 #262485 #3331B5

Accessibility & contrast

On white

16.25

#181755 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#181755 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181755

16.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181755	#FFFFFF	#000000	##FFFFFF
##181755	1.00	16.25	1.29	16.25
#FFFFFF	16.25	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002357

Deuteranopia (green-blind)

#001D54

Tritanopia (blue-blind)

#002733

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #181755;
/* rgb */ color: rgb(24, 23, 85);
/* oklch */ color: oklch(25.4% 0.109 276.1);

Tailwind

colors: {
  custom: {
    50: '#5e5486',
    500: '#181755',
    950: '#000000',
  },
}

SCSS

$custom: #181755;
$custom-light: #5e5486;
$custom-dark: #000000;

JSON

{
  "hex": "#181755",
  "rgb": {
    "r": 24,
    "g": 23,
    "b": 85
  },
  "hsl": {
    "h": 240.968,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.25407,
    "c": 0.10857,
    "h": 276.1
  },
  "luminance": 0.01463
}

Semantic roles & 50–950 ramp

primary

#181755

secondary

#8B8C3C

accent

#E147DE

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #181755

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

Preview Lab → · Contrast checker → · Palette generator →