#043740#043740

#043740 is a dark, muted teal. Relative luminance 0.031; OKLCH L 31.0% C 0.052 H 213.1°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#043740
RGB	rgb(4, 55, 64)
HSL	hsl(189, 88%, 13%)
HSV	hsv(189, 94%, 25%)
CMYK	cmyk(93.8%, 14.1%, 0%, 74.9%)
CIE-LAB	lab(20.55, -12.06, -10.14)
CIE-LCH	lch(20.55, 15.76, 220.07°)
OKLab	oklab(31.03% -0.0435 -0.0283)
OKLCH	oklch(31.03% 0.052 213.1)
XYZ	xyz(2.3413, 3.1281, 5.3299)
Luminance	0.0313 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#043740 #400D04

analogous

#04402B #043740 #041940

triadic

#043740 #400437 #374004

tetradic

#043740 #2B0440 #400D04 #194004

square

#043740 #2B0440 #400D04 #194004

split-complementary

#043740 #400419 #402B04

monochromatic

#02191D #02191D #043740 #08687A #0B9AB3

Accessibility & contrast

On white

12.92

#043740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#043740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #043740

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##043740	#FFFFFF	#000000	##FFFFFF
##043740	1.00	12.92	1.63	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303541

Deuteranopia (green-blind)

#282F40

Tritanopia (blue-blind)

#003B3A

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #043740;
/* rgb */ color: rgb(4, 55, 64);
/* oklch */ color: oklch(31.0% 0.052 213.1);

Tailwind

colors: {
  custom: {
    50: '#526e74',
    500: '#043740',
    950: '#000000',
  },
}

SCSS

$custom: #043740;
$custom-light: #526e74;
$custom-dark: #000000;

JSON

{
  "hex": "#043740",
  "rgb": {
    "r": 4,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 189,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.31031,
    "c": 0.05192,
    "h": 213.1
  },
  "luminance": 0.03128
}

Semantic roles & 50–950 ramp

primary

#043740

secondary

#812D1F

accent

#4929FE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#030708

muted

#787A7B

Preview Lab

Preview with #043740

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

Preview Lab → · Contrast checker → · Palette generator →