#043739#043739

#043739 is a dark, muted teal. Relative luminance 0.031; OKLCH L 30.7% C 0.050 H 199.0°. Best body text is #FFFFFF at 13.04:1 contrast (WCAG AA passes).

Color values

HEX	#043739
RGB	rgb(4, 55, 57)
HSL	hsl(182, 87%, 12%)
HSV	hsv(182, 93%, 22%)
CMYK	cmyk(93%, 3.5%, 0%, 77.6%)
CIE-LAB	lab(20.26, -14.77, -5.84)
CIE-LCH	lch(20.26, 15.89, 201.57°)
OKLab	oklab(30.7% -0.0471 -0.0162)
OKLCH	oklch(30.7% 0.05 199)
XYZ	xyz(2.1544, 3.0533, 4.3459)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#043739 #390604

analogous

#043921 #043739 #041D39

triadic

#043739 #390437 #373904

tetradic

#043739 #210439 #390604 #1D3904

square

#043739 #210439 #390604 #1D3904

split-complementary

#043739 #39041D #392104

monochromatic

#021C1D #021C1D #043739 #086E72 #0CA5AB

Accessibility & contrast

On white

13.04

#043739 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#043739 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #043739

13.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##043739	#FFFFFF	#000000	##FFFFFF
##043739	1.00	13.04	1.61	13.04
#FFFFFF	13.04	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323439

Deuteranopia (green-blind)

#2B2F39

Tritanopia (blue-blind)

#003937

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #043739;
/* rgb */ color: rgb(4, 55, 57);
/* oklch */ color: oklch(30.7% 0.050 199.0);

Tailwind

colors: {
  custom: {
    50: '#506e6f',
    500: '#043739',
    950: '#000000',
  },
}

SCSS

$custom: #043739;
$custom-light: #506e6f;
$custom-dark: #000000;

JSON

{
  "hex": "#043739",
  "rgb": {
    "r": 4,
    "g": 55,
    "b": 57
  },
  "hsl": {
    "h": 182.264,
    "s": 86.885,
    "l": 11.961
  },
  "oklch": {
    "l": 0.30696,
    "c": 0.04985,
    "h": 199
  },
  "luminance": 0.03054
}

Semantic roles & 50–950 ramp

primary

#043739

secondary

#7B211E

accent

#332BFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020707

muted

#787A7A

Preview Lab

Preview with #043739

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

Preview Lab → · Contrast checker → · Palette generator →