#183E82#183E82

#183E82 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 37.9% C 0.123 H 261.0°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#183E82
RGB	rgb(24, 62, 130)
HSL	hsl(218, 69%, 30%)
HSV	hsv(218, 82%, 51%)
CMYK	cmyk(81.5%, 52.3%, 0%, 49%)
CIE-LAB	lab(27.44, 13.26, -42.12)
CIE-LCH	lch(27.44, 44.16, 287.47°)
OKLab	oklab(37.89% -0.0193 -0.1212)
OKLCH	oklch(37.89% 0.123 261)
XYZ	xyz(6.1271, 5.2504, 21.8053)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E82 #825C18

analogous

#187382 #183E82 #271882

triadic

#183E82 #82183E #3E8218

tetradic

#183E82 #821873 #825C18 #188227

square

#183E82 #821873 #825C18 #188227

split-complementary

#183E82 #822718 #738218

monochromatic

#050D1B #0E254E #183E82 #2257B6 #3A73DB

Accessibility & contrast

On white

10.24

#183E82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#183E82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E82

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E82	#FFFFFF	#000000	##FFFFFF
##183E82	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134684

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #183e82;
/* rgb */ color: rgb(24, 62, 130);
/* oklch */ color: oklch(37.9% 0.123 261.0);

Tailwind

colors: {
  custom: {
    50: '#6772a7',
    500: '#183e82',
    950: '#000000',
  },
}

SCSS

$custom: #183e82;
$custom-light: #6772a7;
$custom-dark: #000000;

JSON

{
  "hex": "#183e82",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 130
  },
  "hsl": {
    "h": 218.491,
    "s": 68.831,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37886,
    "c": 0.12277,
    "h": 261
  },
  "luminance": 0.05251
}

Semantic roles & 50–950 ramp

primary

#183E82

secondary

#B68C40

accent

#AD3CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #183E82

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

Preview Lab → · Contrast checker → · Palette generator →