#183C64#183C64

#183C64 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.2% C 0.081 H 253.2°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#183C64
RGB	rgb(24, 60, 100)
HSL	hsl(212, 61%, 24%)
HSV	hsv(212, 76%, 39%)
CMYK	cmyk(76%, 40%, 0%, 60.8%)
CIE-LAB	lab(24.78, 2.26, -27.32)
CIE-LCH	lch(24.78, 27.41, 274.74°)
OKLab	oklab(35.18% -0.0236 -0.0778)
OKLCH	oklch(35.18% 0.081 253.2)
XYZ	xyz(4.2919, 4.3455, 12.6667)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183C64 #644018

analogous

#186264 #183C64 #1A1864

triadic

#183C64 #64183C #3C6418

tetradic

#183C64 #641862 #644018 #18641A

square

#183C64 #641862 #644018 #18641A

split-complementary

#183C64 #641A18 #626418

monochromatic

#060F19 #0C1E33 #183C64 #245A95 #3077C7

Accessibility & contrast

On white

11.23

#183C64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#183C64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183C64

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183C64	#FFFFFF	#000000	##FFFFFF
##183C64	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3F66

Deuteranopia (green-blind)

#1E3863

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183c64;
/* rgb */ color: rgb(24, 60, 100);
/* oklch */ color: oklch(35.2% 0.081 253.2);

Tailwind

colors: {
  custom: {
    50: '#607190',
    500: '#183c64',
    950: '#000000',
  },
}

SCSS

$custom: #183c64;
$custom-light: #607190;
$custom-dark: #000000;

JSON

{
  "hex": "#183c64",
  "rgb": {
    "r": 24,
    "g": 60,
    "b": 100
  },
  "hsl": {
    "h": 211.579,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.35184,
    "c": 0.08127,
    "h": 253.2
  },
  "luminance": 0.04346
}

Semantic roles & 50–950 ramp

primary

#183C64

secondary

#9A6E3E

accent

#9843E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183C64

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

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