#183C62#183C62

#183C62 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.1% C 0.078 H 252.1°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#183C62
RGB	rgb(24, 60, 98)
HSL	hsl(211, 61%, 24%)
HSV	hsv(211, 76%, 38%)
CMYK	cmyk(75.5%, 38.8%, 0%, 61.6%)
CIE-LAB	lab(24.66, 1.45, -26.21)
CIE-LCH	lch(24.66, 26.25, 273.16°)
OKLab	oklab(35.05% -0.0241 -0.0745)
OKLCH	oklch(35.05% 0.078 252.1)
XYZ	xyz(4.1963, 4.3073, 12.1631)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C62 #623E18

analogous

#186162 #183C62 #191862

triadic

#183C62 #62183C #3C6218

tetradic

#183C62 #621861 #623E18 #186219

square

#183C62 #621861 #623E18 #186219

split-complementary

#183C62 #621918 #616218

monochromatic

#060F19 #0C1E31 #183C62 #245A93 #3078C4

Accessibility & contrast

On white

11.28

#183C62 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#183C62 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C62

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C62	#FFFFFF	#000000	##FFFFFF
##183C62	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3E64

Deuteranopia (green-blind)

#203761

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183c62;
/* rgb */ color: rgb(24, 60, 98);
/* oklch */ color: oklch(35.1% 0.078 252.1);

Tailwind

colors: {
  custom: {
    50: '#5f718f',
    500: '#183c62',
    950: '#000000',
  },
}

SCSS

$custom: #183c62;
$custom-light: #5f718f;
$custom-dark: #000000;

JSON

{
  "hex": "#183c62",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 98
  },
  "hsl": {
    "h": 210.811,
    "s": 60.656,
    "l": 23.922
  },
  "oklch": {
    "l": 0.35051,
    "c": 0.07835,
    "h": 252.1
  },
  "luminance": 0.04308
}

Semantic roles & 50–950 ramp

primary

#183C62

secondary

#986C3E

accent

#9644E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183C62

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

Preview Lab → · Contrast checker → · Palette generator →