#182A71#182A71

#182A71 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.0% C 0.125 H 267.7°. Best body text is #FFFFFF at 13.06:1 contrast (WCAG AA passes).

Color values

HEX	#182A71
RGB	rgb(24, 42, 113)
HSL	hsl(228, 65%, 27%)
HSV	hsv(228, 79%, 44%)
CMYK	cmyk(78.8%, 62.8%, 0%, 55.7%)
CIE-LAB	lab(20.21, 20.47, -43.08)
CIE-LCH	lch(20.21, 47.69, 295.41°)
OKLab	oklab(32% -0.005 -0.1244)
OKLCH	oklch(32% 0.125 267.7)
XYZ	xyz(4.1843, 3.0419, 15.9862)
Luminance	0.0304 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#182A71 #715F18

analogous

#185771 #182A71 #331871

triadic

#182A71 #71182A #2A7118

tetradic

#182A71 #711857 #715F18 #187133

square

#182A71 #711857 #715F18 #187133

split-complementary

#182A71 #713318 #577118

monochromatic

#050919 #0D173F #182A71 #233DA3 #3051D3

Accessibility & contrast

On white

13.06

#182A71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#182A71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #182A71

13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##182A71	#FFFFFF	#000000	##FFFFFF
##182A71	1.00	13.06	1.61	13.06
#FFFFFF	13.06	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#002D70

Tritanopia (blue-blind)

#003C49

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #182a71;
/* rgb */ color: rgb(24, 42, 113);
/* oklch */ color: oklch(32.0% 0.125 267.7);

Tailwind

colors: {
  custom: {
    50: '#64639a',
    500: '#182a71',
    950: '#000000',
  },
}

SCSS

$custom: #182a71;
$custom-light: #64639a;
$custom-dark: #000000;

JSON

{
  "hex": "#182a71",
  "rgb": {
    "r": 24,
    "g": 42,
    "b": 113
  },
  "hsl": {
    "h": 227.865,
    "s": 64.964,
    "l": 26.863
  },
  "oklch": {
    "l": 0.31997,
    "c": 0.12452,
    "h": 267.7
  },
  "luminance": 0.03042
}

Semantic roles & 50–950 ramp

primary

#182A71

secondary

#A6913E

accent

#C640E8

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #182A71

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

Preview Lab → · Contrast checker → · Palette generator →