#183D60#183D60

#183D60 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.074 H 249.7°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#183D60
RGB	rgb(24, 61, 96)
HSL	hsl(209, 60%, 24%)
HSV	hsv(209, 75%, 38%)
CMYK	cmyk(75%, 36.5%, 0%, 62.4%)
CIE-LAB	lab(24.88, -0.04, -24.58)
CIE-LCH	lch(24.88, 24.58, 269.90°)
OKLab	oklab(35.18% -0.0258 -0.0698)
OKLCH	oklch(35.18% 0.074 249.7)
XYZ	xyz(4.1560, 4.3758, 11.6896)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D60 #603B18

analogous

#18605F #183D60 #181960

triadic

#183D60 #60183D #3D6018

tetradic

#183D60 #5F1860 #603B18 #196018

square

#183D60 #5F1860 #603B18 #196018

split-complementary

#183D60 #601819 #605F18

monochromatic

#061018 #0C1E2F #183D60 #245C91 #307BC2

Accessibility & contrast

On white

11.20

#183D60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#183D60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D60

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D60	#FFFFFF	#000000	##FFFFFF
##183D60	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D3F61

Deuteranopia (green-blind)

#23385F

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #183d60;
/* rgb */ color: rgb(24, 61, 96);
/* oklch */ color: oklch(35.2% 0.074 249.7);

Tailwind

colors: {
  custom: {
    50: '#5f728d',
    500: '#183d60',
    950: '#000000',
  },
}

SCSS

$custom: #183d60;
$custom-light: #5f728d;
$custom-dark: #000000;

JSON

{
  "hex": "#183d60",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 96
  },
  "hsl": {
    "h": 209.167,
    "s": 60,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35181,
    "c": 0.07438,
    "h": 249.7
  },
  "luminance": 0.04376
}

Semantic roles & 50–950 ramp

primary

#183D60

secondary

#96693D

accent

#9245E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183D60

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

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