#183E66#183E66

#183E66 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.8% C 0.082 H 252.1°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#183E66
RGB	rgb(24, 62, 102)
HSL	hsl(211, 62%, 25%)
HSV	hsv(211, 76%, 40%)
CMYK	cmyk(76.5%, 39.2%, 0%, 60%)
CIE-LAB	lab(25.56, 1.71, -27.38)
CIE-LCH	lch(25.56, 27.43, 273.57°)
OKLab	oklab(35.83% -0.0251 -0.0779)
OKLCH	oklch(35.83% 0.082 252.1)
XYZ	xyz(4.4967, 4.5983, 13.2184)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E66 #664018

analogous

#186566 #183E66 #191866

triadic

#183E66 #66183E #3E6618

tetradic

#183E66 #661865 #664018 #186619

square

#183E66 #661865 #664018 #186619

split-complementary

#183E66 #661918 #656618

monochromatic

#060F19 #0C2034 #183E66 #245C98 #2F7AC9

Accessibility & contrast

On white

10.94

#183E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#183E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E66

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E66	#FFFFFF	#000000	##FFFFFF
##183E66	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4168

Deuteranopia (green-blind)

#203965

Tritanopia (blue-blind)

#00474D

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #183e66;
/* rgb */ color: rgb(24, 62, 102);
/* oklch */ color: oklch(35.8% 0.082 252.1);

Tailwind

colors: {
  custom: {
    50: '#607292',
    500: '#183e66',
    950: '#000000',
  },
}

SCSS

$custom: #183e66;
$custom-light: #607292;
$custom-dark: #000000;

JSON

{
  "hex": "#183e66",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 102
  },
  "hsl": {
    "h": 210.769,
    "s": 61.905,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35829,
    "c": 0.08187,
    "h": 252.1
  },
  "luminance": 0.04599
}

Semantic roles & 50–950 ramp

primary

#183E66

secondary

#9C6E3E

accent

#9643E5

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #183E66

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

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