#183A4C#183A4C

#183A4C is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.2% C 0.051 H 234.3°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#183A4C
RGB	rgb(24, 58, 76)
HSL	hsl(201, 52%, 20%)
HSV	hsv(201, 68%, 30%)
CMYK	cmyk(68.4%, 23.7%, 0%, 70.2%)
CIE-LAB	lab(22.80, -5.89, -14.69)
CIE-LCH	lch(22.80, 15.82, 248.15°)
OKLab	oklab(33.19% -0.0296 -0.0411)
OKLCH	oklch(33.19% 0.051 234.3)
XYZ	xyz(3.1938, 3.7418, 7.3900)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A4C #4C2A18

analogous

#184C44 #183A4C #18204C

triadic

#183A4C #4C183A #3A4C18

tetradic

#183A4C #44184C #4C2A18 #204C18

square

#183A4C #44184C #4C2A18 #204C18

split-complementary

#183A4C #4C1820 #4C4418

monochromatic

#071217 #09171D #183A4C #275D7B #3581A9

Accessibility & contrast

On white

12.01

#183A4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#183A4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A4C

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A4C	#FFFFFF	#000000	##FFFFFF
##183A4C	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#31394D

Deuteranopia (green-blind)

#2A344C

Tritanopia (blue-blind)

#003F40

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #183a4c;
/* rgb */ color: rgb(24, 58, 76);
/* oklch */ color: oklch(33.2% 0.051 234.3);

Tailwind

colors: {
  custom: {
    50: '#5b707e',
    500: '#183a4c',
    950: '#000000',
  },
}

SCSS

$custom: #183a4c;
$custom-light: #5b707e;
$custom-dark: #000000;

JSON

{
  "hex": "#183a4c",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 76
  },
  "hsl": {
    "h": 200.769,
    "s": 52,
    "l": 19.608
  },
  "oklch": {
    "l": 0.33192,
    "c": 0.05063,
    "h": 234.3
  },
  "luminance": 0.03742
}

Semantic roles & 50–950 ramp

primary

#183A4C

secondary

#83553D

accent

#7E4CDB

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #183A4C

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

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