#183C60#183C60

#183C60 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.075 H 250.9°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#183C60
RGB	rgb(24, 60, 96)
HSL	hsl(210, 60%, 24%)
HSV	hsv(210, 75%, 38%)
CMYK	cmyk(75%, 37.5%, 0%, 62.4%)
CIE-LAB	lab(24.54, 0.64, -25.10)
CIE-LCH	lch(24.54, 25.11, 271.46°)
OKLab	oklab(34.92% -0.0247 -0.0713)
OKLCH	oklch(34.92% 0.075 250.9)
XYZ	xyz(4.1031, 4.2700, 11.6720)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C60 #603C18

analogous

#186060 #183C60 #181860

triadic

#183C60 #60183C #3C6018

tetradic

#183C60 #601860 #603C18 #186018

square

#183C60 #601860 #603C18 #186018

split-complementary

#183C60 #601818 #606018

monochromatic

#060F18 #0C1D2F #183C60 #245B91 #3079C2

Accessibility & contrast

On white

11.33

#183C60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#183C60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C60

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C60	#FFFFFF	#000000	##FFFFFF
##183C60	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3E62

Deuteranopia (green-blind)

#21375F

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #183c60;
/* rgb */ color: rgb(24, 60, 96);
/* oklch */ color: oklch(34.9% 0.075 250.9);

Tailwind

colors: {
  custom: {
    50: '#5f718d',
    500: '#183c60',
    950: '#000000',
  },
}

SCSS

$custom: #183c60;
$custom-light: #5f718d;
$custom-dark: #000000;

JSON

{
  "hex": "#183c60",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 96
  },
  "hsl": {
    "h": 210,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.3492,
    "c": 0.07545,
    "h": 250.9
  },
  "luminance": 0.0427
}

Semantic roles & 50–950 ramp

primary

#183C60

secondary

#966A3D

accent

#9445E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183C60

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

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