#183E85#183E85

#183E85 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.1% C 0.127 H 261.5°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#183E85
RGB	rgb(24, 62, 133)
HSL	hsl(219, 69%, 31%)
HSV	hsv(219, 82%, 52%)
CMYK	cmyk(82%, 53.4%, 0%, 47.8%)
CIE-LAB	lab(27.66, 14.49, -43.63)
CIE-LCH	lch(27.66, 45.97, 288.38°)
OKLab	oklab(38.13% -0.0189 -0.1257)
OKLCH	oklch(38.13% 0.127 261.5)
XYZ	xyz(6.3314, 5.3321, 22.8813)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E85 #855F18

analogous

#187485 #183E85 #291885

triadic

#183E85 #85183E #3E8518

tetradic

#183E85 #851874 #855F18 #188529

square

#183E85 #851874 #855F18 #188529

split-complementary

#183E85 #852918 #748518

monochromatic

#050E1D #0F2651 #183E85 #2156B9 #3C73DC

Accessibility & contrast

On white

10.16

#183E85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#183E85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E85

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E85	#FFFFFF	#000000	##FFFFFF
##183E85	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D4788

Deuteranopia (green-blind)

#003D84

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #183e85;
/* rgb */ color: rgb(24, 62, 133);
/* oklch */ color: oklch(38.1% 0.127 261.5);

Tailwind

colors: {
  custom: {
    50: '#6872a9',
    500: '#183e85',
    950: '#000000',
  },
}

SCSS

$custom: #183e85;
$custom-light: #6872a9;
$custom-dark: #000000;

JSON

{
  "hex": "#183e85",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 133
  },
  "hsl": {
    "h": 219.083,
    "s": 69.427,
    "l": 30.784
  },
  "oklch": {
    "l": 0.38129,
    "c": 0.12709,
    "h": 261.5
  },
  "luminance": 0.05333
}

Semantic roles & 50–950 ramp

primary

#183E85

secondary

#B98F40

accent

#AF3CEC

background

#F6F6FA

surface

#ECECF4

border

#C7C7CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #183E85

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

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