#183A40#183A40

#183A40 is a dark, muted teal. Relative luminance 0.036; OKLCH L 32.6% C 0.041 H 210.6°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#183A40
RGB	rgb(24, 58, 64)
HSL	hsl(189, 45%, 17%)
HSV	hsv(189, 63%, 25%)
CMYK	cmyk(62.5%, 9.4%, 0%, 74.9%)
CIE-LAB	lab(22.27, -10.25, -7.48)
CIE-LCH	lch(22.27, 12.69, 216.10°)
OKLab	oklab(32.59% -0.035 -0.0207)
OKLCH	oklch(32.59% 0.041 210.6)
XYZ	xyz(2.8148, 3.5902, 5.3941)
Luminance	0.0359 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#183A40 #401E18

analogous

#184032 #183A40 #182640

triadic

#183A40 #40183A #3A4018

tetradic

#183A40 #321840 #401E18 #264018

square

#183A40 #321840 #401E18 #264018

split-complementary

#183A40 #401826 #403218

monochromatic

#081416 #081416 #183A40 #29626D #398B99

Accessibility & contrast

On white

12.22

#183A40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#183A40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #183A40

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##183A40	#FFFFFF	#000000	##FFFFFF
##183A40	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353840

Deuteranopia (green-blind)

#2F3340

Tritanopia (blue-blind)

#003D3C

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #183a40;
/* rgb */ color: rgb(24, 58, 64);
/* oklch */ color: oklch(32.6% 0.041 210.6);

Tailwind

colors: {
  custom: {
    50: '#597074',
    500: '#183a40',
    950: '#000000',
  },
}

SCSS

$custom: #183a40;
$custom-light: #597074;
$custom-dark: #000000;

JSON

{
  "hex": "#183a40",
  "rgb": {
    "r": 24,
    "g": 58,
    "b": 64
  },
  "hsl": {
    "h": 189,
    "s": 45.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.32592,
    "c": 0.04068,
    "h": 210.6
  },
  "luminance": 0.0359
}

Semantic roles & 50–950 ramp

primary

#183A40

secondary

#77463D

accent

#6653D5

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040708

muted

#797A7B

Preview Lab

Preview with #183A40

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

Preview Lab → · Contrast checker → · Palette generator →