#183D43#183D43

#183D43 is a dark, muted teal. Relative luminance 0.039; OKLCH L 33.6% C 0.043 H 209.5°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#183D43
RGB	rgb(24, 61, 67)
HSL	hsl(188, 47%, 18%)
HSV	hsv(188, 64%, 26%)
CMYK	cmyk(64.2%, 9%, 0%, 73.7%)
CIE-LAB	lab(23.46, -11.06, -7.68)
CIE-LCH	lch(23.46, 13.47, 214.77°)
OKLab	oklab(33.59% -0.0376 -0.0213)
OKLCH	oklch(33.59% 0.043 209.5)
XYZ	xyz(3.0581, 3.9366, 5.9078)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183D43 #431E18

analogous

#184333 #183D43 #182743

triadic

#183D43 #43183D #3D4318

tetradic

#183D43 #331843 #431E18 #274318

square

#183D43 #331843 #431E18 #274318

split-complementary

#183D43 #431827 #433318

monochromatic

#081517 #081517 #183D43 #286670 #388F9D

Accessibility & contrast

On white

11.75

#183D43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#183D43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183D43

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183D43	#FFFFFF	#000000	##FFFFFF
##183D43	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#383B43

Deuteranopia (green-blind)

#313643

Tritanopia (blue-blind)

#00403F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #183d43;
/* rgb */ color: rgb(24, 61, 67);
/* oklch */ color: oklch(33.6% 0.043 209.5);

Tailwind

colors: {
  custom: {
    50: '#5a7277',
    500: '#183d43',
    950: '#000000',
  },
}

SCSS

$custom: #183d43;
$custom-light: #5a7277;
$custom-dark: #000000;

JSON

{
  "hex": "#183d43",
  "rgb": {
    "r": 24,
    "g": 61,
    "b": 67
  },
  "hsl": {
    "h": 188.372,
    "s": 47.253,
    "l": 17.843
  },
  "oklch": {
    "l": 0.3359,
    "c": 0.04316,
    "h": 209.5
  },
  "luminance": 0.03937
}

Semantic roles & 50–950 ramp

primary

#183D43

secondary

#7A463D

accent

#6451D7

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040808

muted

#797B7B

Preview Lab

Preview with #183D43

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

Preview Lab → · Contrast checker → · Palette generator →