#183E84#183E84

#183E84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.126 H 261.3°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#183E84
RGB	rgb(24, 62, 132)
HSL	hsl(219, 69%, 31%)
HSV	hsv(219, 82%, 52%)
CMYK	cmyk(81.8%, 53%, 0%, 48.2%)
CIE-LAB	lab(27.59, 14.08, -43.13)
CIE-LCH	lch(27.59, 45.37, 288.08°)
OKLab	oklab(38.05% -0.019 -0.1242)
OKLCH	oklch(38.05% 0.126 261.3)
XYZ	xyz(6.2627, 5.3046, 22.5192)
Luminance	0.0530 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E84 #845E18

analogous

#187484 #183E84 #281884

triadic

#183E84 #84183E #3E8418

tetradic

#183E84 #841874 #845E18 #188428

square

#183E84 #841874 #845E18 #188428

split-complementary

#183E84 #842818 #748418

monochromatic

#050D1C #0F2650 #183E84 #2156B8 #3B73DB

Accessibility & contrast

On white

10.19

#183E84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#183E84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E84

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E84	#FFFFFF	#000000	##FFFFFF
##183E84	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4687

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #183e84;
/* rgb */ color: rgb(24, 62, 132);
/* oklch */ color: oklch(38.0% 0.126 261.3);

Tailwind

colors: {
  custom: {
    50: '#6872a8',
    500: '#183e84',
    950: '#000000',
  },
}

SCSS

$custom: #183e84;
$custom-light: #6872a8;
$custom-dark: #000000;

JSON

{
  "hex": "#183e84",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 132
  },
  "hsl": {
    "h": 218.889,
    "s": 69.231,
    "l": 30.588
  },
  "oklch": {
    "l": 0.38047,
    "c": 0.12565,
    "h": 261.3
  },
  "luminance": 0.05305
}

Semantic roles & 50–950 ramp

primary

#183E84

secondary

#B88E40

accent

#AE3CEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #183E84

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

Preview Lab → · Contrast checker → · Palette generator →