#181B70#181B70

#181B70 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.1% C 0.142 H 271.9°. Best body text is #FFFFFF at 14.69:1 contrast (WCAG AA passes).

Color values

HEX	#181B70
RGB	rgb(24, 27, 112)
HSL	hsl(238, 65%, 27%)
HSV	hsv(238, 79%, 44%)
CMYK	cmyk(78.6%, 75.9%, 0%, 56.1%)
CIE-LAB	lab(16.24, 30.36, -48.94)
CIE-LCH	lch(16.24, 57.59, 301.81°)
OKLab	oklab(29.07% 0.0047 -0.1416)
OKLCH	oklch(29.07% 0.142 271.9)
XYZ	xyz(3.6923, 2.1475, 15.5460)
Luminance	0.0215 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181B70 #706D18

analogous

#184770 #181B70 #411870

triadic

#181B70 #70181B #1B7018

tetradic

#181B70 #701847 #706D18 #187041

square

#181B70 #701847 #706D18 #187041

split-complementary

#181B70 #704118 #477018

monochromatic

#050619 #0D0F3E #181B70 #2327A2 #3035D3

Accessibility & contrast

On white

14.69

#181B70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#181B70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181B70

14.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181B70	#FFFFFF	#000000	##FFFFFF
##181B70	1.00	14.69	1.43	14.69
#FFFFFF	14.69	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D73

Deuteranopia (green-blind)

#00246E

Tritanopia (blue-blind)

#003343

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #181b70;
/* rgb */ color: rgb(24, 27, 112);
/* oklch */ color: oklch(29.1% 0.142 271.9);

Tailwind

colors: {
  custom: {
    50: '#65589a',
    500: '#181b70',
    950: '#000000',
  },
}

SCSS

$custom: #181b70;
$custom-light: #65589a;
$custom-dark: #000000;

JSON

{
  "hex": "#181b70",
  "rgb": {
    "r": 24,
    "g": 27,
    "b": 112
  },
  "hsl": {
    "h": 237.955,
    "s": 64.706,
    "l": 26.667
  },
  "oklch": {
    "l": 0.2907,
    "c": 0.14173,
    "h": 271.9
  },
  "luminance": 0.02148
}

Semantic roles & 50–950 ramp

primary

#181B70

secondary

#A5A23E

accent

#E240E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #181B70

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

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