#181B56#181B56

#181B56 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.3% C 0.105 H 274.4°. Best body text is #FFFFFF at 15.79:1 contrast (WCAG AA passes).

Color values

HEX	#181B56
RGB	rgb(24, 27, 86)
HSL	hsl(237, 56%, 22%)
HSV	hsv(237, 72%, 34%)
CMYK	cmyk(72.1%, 68.6%, 0%, 66.3%)
CIE-LAB	lab(13.53, 20.37, -36.18)
CIE-LCH	lch(13.53, 41.52, 299.38°)
OKLab	oklab(26.28% 0.008 -0.1043)
OKLCH	oklch(26.28% 0.105 274.4)
XYZ	xyz(2.4478, 1.6497, 8.9917)
Luminance	0.0165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B56 #565318

analogous

#183A56 #181B56 #341856

triadic

#181B56 #56181B #1B5618

tetradic

#181B56 #56183A #565318 #185634

square

#181B56 #56183A #565318 #185634

split-complementary

#181B56 #563418 #3A5618

monochromatic

#070818 #0B0C26 #181B56 #252A86 #3339B6

Accessibility & contrast

On white

15.79

#181B56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#181B56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B56

15.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B56	#FFFFFF	#000000	##FFFFFF
##181B56	1.00	15.79	1.33	15.79
#FFFFFF	15.79	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002558

Deuteranopia (green-blind)

#002055

Tritanopia (blue-blind)

#002A35

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #181b56;
/* rgb */ color: rgb(24, 27, 86);
/* oklch */ color: oklch(26.3% 0.105 274.4);

Tailwind

colors: {
  custom: {
    50: '#5e5786',
    500: '#181b56',
    950: '#000000',
  },
}

SCSS

$custom: #181b56;
$custom-light: #5e5786;
$custom-dark: #000000;

JSON

{
  "hex": "#181b56",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 86
  },
  "hsl": {
    "h": 237.097,
    "s": 56.364,
    "l": 21.569
  },
  "oklch": {
    "l": 0.26283,
    "c": 0.10465,
    "h": 274.4
  },
  "luminance": 0.0165
}

Semantic roles & 50–950 ramp

primary

#181B56

secondary

#8D893D

accent

#D848E0

background

#F5F5F8

surface

#EAE9EF

border

#C6C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #181B56

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

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