#183F62#183F62

#183F62 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.8% C 0.075 H 248.6°. Best body text is #FFFFFF at 10.90:1 contrast (WCAG AA passes).

Color values

HEX	#183F62
RGB	rgb(24, 63, 98)
HSL	hsl(208, 61%, 24%)
HSV	hsv(208, 76%, 38%)
CMYK	cmyk(75.5%, 35.7%, 0%, 61.6%)
CIE-LAB	lab(25.66, -0.59, -24.64)
CIE-LCH	lch(25.66, 24.65, 268.63°)
OKLab	oklab(35.83% -0.0274 -0.0699)
OKLCH	oklch(35.83% 0.075 248.6)
XYZ	xyz(4.3580, 4.6306, 12.2170)
Luminance	0.0463 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183F62 #623B18

analogous

#186260 #183F62 #181A62

triadic

#183F62 #62183F #3F6218

tetradic

#183F62 #601862 #623B18 #1A6218

square

#183F62 #601862 #623B18 #1A6218

split-complementary

#183F62 #62181A #626018

monochromatic

#061019 #0C1F31 #183F62 #245F93 #307EC4

Accessibility & contrast

On white

10.90

#183F62 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#183F62 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183F62

10.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183F62	#FFFFFF	#000000	##FFFFFF
##183F62	1.00	10.90	1.93	10.90
#FFFFFF	10.90	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4163

Deuteranopia (green-blind)

#253A61

Tritanopia (blue-blind)

#00474C

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183f62;
/* rgb */ color: rgb(24, 63, 98);
/* oklch */ color: oklch(35.8% 0.075 248.6);

Tailwind

colors: {
  custom: {
    50: '#5f738f',
    500: '#183f62',
    950: '#000000',
  },
}

SCSS

$custom: #183f62;
$custom-light: #5f738f;
$custom-dark: #000000;

JSON

{
  "hex": "#183f62",
  "rgb": {
    "r": 24,
    "g": 63,
    "b": 98
  },
  "hsl": {
    "h": 208.378,
    "s": 60.656,
    "l": 23.922
  },
  "oklch": {
    "l": 0.35829,
    "c": 0.07509,
    "h": 248.6
  },
  "luminance": 0.04631
}

Semantic roles & 50–950 ramp

primary

#183F62

secondary

#98683E

accent

#9044E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #183F62

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

Preview Lab → · Contrast checker → · Palette generator →