#183B82#183B82

#183B82 is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.2% C 0.127 H 262.3°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#183B82
RGB	rgb(24, 59, 130)
HSL	hsl(220, 69%, 30%)
HSV	hsv(220, 82%, 51%)
CMYK	cmyk(81.5%, 54.6%, 0%, 49%)
CIE-LAB	lab(26.54, 15.36, -43.57)
CIE-LCH	lch(26.54, 46.20, 289.42°)
OKLab	oklab(37.21% -0.0169 -0.1256)
OKLCH	oklch(37.21% 0.127 262.3)
XYZ	xyz(5.9685, 4.9331, 21.7524)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183B82 #825F18

analogous

#187082 #183B82 #2A1882

triadic

#183B82 #82183B #3B8218

tetradic

#183B82 #821870 #825F18 #18822A

square

#183B82 #821870 #825F18 #18822A

split-complementary

#183B82 #822A18 #708218

monochromatic

#050C1B #0E244E #183B82 #2252B6 #3A6FDB

Accessibility & contrast

On white

10.57

#183B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#183B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183B82

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183B82	#FFFFFF	#000000	##FFFFFF
##183B82	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#064485

Deuteranopia (green-blind)

#003A81

Tritanopia (blue-blind)

#004C58

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #183b82;
/* rgb */ color: rgb(24, 59, 130);
/* oklch */ color: oklch(37.2% 0.127 262.3);

Tailwind

colors: {
  custom: {
    50: '#6770a7',
    500: '#183b82',
    950: '#000000',
  },
}

SCSS

$custom: #183b82;
$custom-light: #6770a7;
$custom-dark: #000000;

JSON

{
  "hex": "#183b82",
  "rgb": {
    "r": 24,
    "g": 59,
    "b": 130
  },
  "hsl": {
    "h": 220.189,
    "s": 68.831,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37206,
    "c": 0.12669,
    "h": 262.3
  },
  "luminance": 0.04934
}

Semantic roles & 50–950 ramp

primary

#183B82

secondary

#B68F40

accent

#B23CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #183B82

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

Preview Lab → · Contrast checker → · Palette generator →