#183E60#183E60

#183E60 is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.4% C 0.073 H 248.4°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#183E60
RGB	rgb(24, 62, 96)
HSL	hsl(208, 60%, 24%)
HSV	hsv(208, 75%, 38%)
CMYK	cmyk(75%, 35.4%, 0%, 62.4%)
CIE-LAB	lab(25.21, -0.72, -24.05)
CIE-LCH	lch(25.21, 24.06, 268.28°)
OKLab	oklab(35.44% -0.0269 -0.0682)
OKLCH	oklch(35.44% 0.073 248.4)
XYZ	xyz(4.2098, 4.4835, 11.7076)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E60 #603A18

analogous

#18605E #183E60 #181A60

triadic

#183E60 #60183E #3E6018

tetradic

#183E60 #5E1860 #603A18 #1A6018

square

#183E60 #5E1860 #603A18 #1A6018

split-complementary

#183E60 #60181A #605E18

monochromatic

#061018 #0C1E2F #183E60 #245E91 #307DC2

Accessibility & contrast

On white

11.07

#183E60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#183E60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E60

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E60	#FFFFFF	#000000	##FFFFFF
##183E60	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4061

Deuteranopia (green-blind)

#25395F

Tritanopia (blue-blind)

#00464A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183e60;
/* rgb */ color: rgb(24, 62, 96);
/* oklch */ color: oklch(35.4% 0.073 248.4);

Tailwind

colors: {
  custom: {
    50: '#5f738d',
    500: '#183e60',
    950: '#000000',
  },
}

SCSS

$custom: #183e60;
$custom-light: #5f738d;
$custom-dark: #000000;

JSON

{
  "hex": "#183e60",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 96
  },
  "hsl": {
    "h": 208.333,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35442,
    "c": 0.07333,
    "h": 248.4
  },
  "luminance": 0.04484
}

Semantic roles & 50–950 ramp

primary

#183E60

secondary

#96673D

accent

#8F45E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #183E60

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

Preview Lab → · Contrast checker → · Palette generator →