#183A3C#183A3C

#183A3C is a dark, muted teal. Relative luminance 0.035; OKLCH L 32.4% C 0.040 H 200.5°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#183A3C
RGB	rgb(24, 58, 60)
HSL	hsl(183, 43%, 16%)
HSV	hsv(183, 60%, 24%)
CMYK	cmyk(60%, 3.3%, 0%, 76.5%)
CIE-LAB	lab(22.11, -11.62, -5.02)
CIE-LCH	lch(22.11, 12.65, 203.38°)
OKLab	oklab(32.41% -0.037 -0.0139)
OKLCH	oklch(32.41% 0.04 200.5)
XYZ	xyz(2.7050, 3.5463, 4.8160)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A3C #3C1A18

analogous

#183C2C #183A3C #18283C

triadic

#183A3C #3C183A #3A3C18

tetradic

#183A3C #2C183C #3C1A18 #283C18

square

#183A3C #2C183C #3C1A18 #283C18

split-complementary

#183A3C #3C1828 #3C2C18

monochromatic

#091516 #091516 #183A3C #296468 #3B8F93

Accessibility & contrast

On white

12.29

#183A3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#183A3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A3C

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A3C	#FFFFFF	#000000	##FFFFFF
##183A3C	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36373C

Deuteranopia (green-blind)

#30333C

Tritanopia (blue-blind)

#003C3B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183a3c;
/* rgb */ color: rgb(24, 58, 60);
/* oklch */ color: oklch(32.4% 0.040 200.5);

Tailwind

colors: {
  custom: {
    50: '#597071',
    500: '#183a3c',
    950: '#000000',
  },
}

SCSS

$custom: #183a3c;
$custom-light: #597071;
$custom-dark: #000000;

JSON

{
  "hex": "#183a3c",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 60
  },
  "hsl": {
    "h": 183.333,
    "s": 42.857,
    "l": 16.471
  },
  "oklch": {
    "l": 0.32414,
    "c": 0.03955,
    "h": 200.5
  },
  "luminance": 0.03547
}

Semantic roles & 50–950 ramp

primary

#183A3C

secondary

#72403E

accent

#5C55D3

background

#F5F6F6

surface

#E9ECEC

border

#C5C7C7

text

#040707

muted

#797A7A

Preview Lab

Preview with #183A3C

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

Preview Lab → · Contrast checker → · Palette generator →