#183A61#183A61

#183A61 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.5% C 0.079 H 253.7°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#183A61
RGB	rgb(24, 58, 97)
HSL	hsl(212, 60%, 24%)
HSV	hsv(212, 75%, 38%)
CMYK	cmyk(75.3%, 40.2%, 0%, 62%)
CIE-LAB	lab(23.94, 2.42, -26.71)
CIE-LCH	lch(23.94, 26.81, 275.18°)
OKLab	oklab(34.47% -0.0222 -0.076)
OKLCH	oklch(34.47% 0.079 253.7)
XYZ	xyz(4.0466, 4.0829, 11.8818)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A61 #613F18

analogous

#185E61 #183A61 #1A1861

triadic

#183A61 #61183A #3A6118

tetradic

#183A61 #61185E #613F18 #18611A

square

#183A61 #61185E #613F18 #18611A

split-complementary

#183A61 #611A18 #5E6118

monochromatic

#060F19 #0C1D30 #183A61 #245792 #3075C3

Accessibility & contrast

On white

11.56

#183A61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#183A61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A61

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A61	#FFFFFF	#000000	##FFFFFF
##183A61	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283D63

Deuteranopia (green-blind)

#1D3660

Tritanopia (blue-blind)

#004348

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #183a61;
/* rgb */ color: rgb(24, 58, 97);
/* oklch */ color: oklch(34.5% 0.079 253.7);

Tailwind

colors: {
  custom: {
    50: '#5f6f8e',
    500: '#183a61',
    950: '#000000',
  },
}

SCSS

$custom: #183a61;
$custom-light: #5f6f8e;
$custom-dark: #000000;

JSON

{
  "hex": "#183a61",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 97
  },
  "hsl": {
    "h": 212.055,
    "s": 60.331,
    "l": 23.725
  },
  "oklch": {
    "l": 0.34469,
    "c": 0.07919,
    "h": 253.7
  },
  "luminance": 0.04083
}

Semantic roles & 50–950 ramp

primary

#183A61

secondary

#976D3D

accent

#9944E3

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #183A61

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

Preview Lab → · Contrast checker → · Palette generator →