#183A47#183A47

#183A47 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 32.9% C 0.045 H 225.8°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#183A47
RGB	rgb(24, 58, 71)
HSL	hsl(197, 49%, 19%)
HSV	hsv(197, 66%, 28%)
CMYK	cmyk(66.2%, 18.3%, 0%, 72.2%)
CIE-LAB	lab(22.57, -7.75, -11.71)
CIE-LCH	lch(22.57, 14.04, 236.49°)
OKLab	oklab(32.93% -0.0317 -0.0326)
OKLCH	oklch(32.93% 0.046 225.8)
XYZ	xyz(3.0266, 3.6749, 6.5098)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A47 #472518

analogous

#18473C #183A47 #182247

triadic

#183A47 #47183A #3A4718

tetradic

#183A47 #3C1847 #472518 #224718

square

#183A47 #3C1847 #472518 #224718

split-complementary

#183A47 #471822 #473C18

monochromatic

#081317 #091519 #183A47 #275F75 #3785A2

Accessibility & contrast

On white

12.10

#183A47 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#183A47 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A47

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A47	#FFFFFF	#000000	##FFFFFF
##183A47	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#333948

Deuteranopia (green-blind)

#2C3447

Tritanopia (blue-blind)

#003E3E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a47;
/* rgb */ color: rgb(24, 58, 71);
/* oklch */ color: oklch(32.9% 0.045 225.8);

Tailwind

colors: {
  custom: {
    50: '#5a707a',
    500: '#183a47',
    950: '#000000',
  },
}

SCSS

$custom: #183a47;
$custom-light: #5a707a;
$custom-dark: #000000;

JSON

{
  "hex": "#183a47",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 71
  },
  "hsl": {
    "h": 196.596,
    "s": 49.474,
    "l": 18.627
  },
  "oklch": {
    "l": 0.3293,
    "c": 0.0455,
    "h": 225.8
  },
  "luminance": 0.03675
}

Semantic roles & 50–950 ramp

primary

#183A47

secondary

#7E4F3D

accent

#754FD9

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #183A47

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

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