#183E61#183E61

#183E61 is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.5% C 0.075 H 249.1°. Best body text is #FFFFFF at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#183E61
RGB	rgb(24, 62, 97)
HSL	hsl(209, 60%, 24%)
HSV	hsv(209, 75%, 38%)
CMYK	cmyk(75.3%, 36.1%, 0%, 62%)
CIE-LAB	lab(25.27, -0.32, -24.61)
CIE-LCH	lch(25.27, 24.61, 269.26°)
OKLab	oklab(35.5% -0.0266 -0.0698)
OKLCH	oklch(35.5% 0.075 249.1)
XYZ	xyz(4.2562, 4.5020, 11.9516)
Luminance	0.0450 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183E61 #613B18

analogous

#18615F #183E61 #181961

triadic

#183E61 #61183E #3E6118

tetradic

#183E61 #5F1861 #613B18 #196118

square

#183E61 #5F1861 #613B18 #196118

split-complementary

#183E61 #611819 #615F18

monochromatic

#061019 #0C1F30 #183E61 #245D92 #307DC3

Accessibility & contrast

On white

11.05

#183E61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#183E61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183E61

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183E61	#FFFFFF	#000000	##FFFFFF
##183E61	1.00	11.05	1.90	11.05
#FFFFFF	11.05	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4062

Deuteranopia (green-blind)

#243960

Tritanopia (blue-blind)

#00464B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #183e61;
/* rgb */ color: rgb(24, 62, 97);
/* oklch */ color: oklch(35.5% 0.075 249.1);

Tailwind

colors: {
  custom: {
    50: '#5f738e',
    500: '#183e61',
    950: '#000000',
  },
}

SCSS

$custom: #183e61;
$custom-light: #5f738e;
$custom-dark: #000000;

JSON

{
  "hex": "#183e61",
  "rgb": {
    "r": 24,
    "g": 62,
    "b": 97
  },
  "hsl": {
    "h": 208.767,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.35505,
    "c": 0.07473,
    "h": 249.1
  },
  "luminance": 0.04503
}

Semantic roles & 50–950 ramp

primary

#183E61

secondary

#97693D

accent

#9144E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #183E61

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

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