#183C61#183C61

#183C61 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.077 H 251.5°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#183C61
RGB	rgb(24, 60, 97)
HSL	hsl(210, 60%, 24%)
HSV	hsv(210, 75%, 38%)
CMYK	cmyk(75.3%, 38.1%, 0%, 62%)
CIE-LAB	lab(24.60, 1.04, -25.66)
CIE-LCH	lch(24.60, 25.68, 272.33°)
OKLab	oklab(34.99% -0.0244 -0.0729)
OKLCH	oklch(34.99% 0.077 251.5)
XYZ	xyz(4.1494, 4.2885, 11.9160)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C61 #613D18

analogous

#186061 #183C61 #181861

triadic

#183C61 #61183C #3C6118

tetradic

#183C61 #611860 #613D18 #186118

square

#183C61 #611860 #613D18 #186118

split-complementary

#183C61 #611818 #606118

monochromatic

#060F19 #0C1E30 #183C61 #245A92 #3079C3

Accessibility & contrast

On white

11.30

#183C61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#183C61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C61

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C61	#FFFFFF	#000000	##FFFFFF
##183C61	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3E63

Deuteranopia (green-blind)

#213760

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183c61;
/* rgb */ color: rgb(24, 60, 97);
/* oklch */ color: oklch(35.0% 0.077 251.5);

Tailwind

colors: {
  custom: {
    50: '#5f718e',
    500: '#183c61',
    950: '#000000',
  },
}

SCSS

$custom: #183c61;
$custom-light: #5f718e;
$custom-dark: #000000;

JSON

{
  "hex": "#183c61",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 97
  },
  "hsl": {
    "h": 210.411,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.34985,
    "c": 0.0769,
    "h": 251.5
  },
  "luminance": 0.04289
}

Semantic roles & 50–950 ramp

primary

#183C61

secondary

#976B3D

accent

#9544E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183C61

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

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