#04373B#04373B

#04373B is a dark, muted teal. Relative luminance 0.031; OKLCH L 30.8% C 0.050 H 203.1°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#04373B
RGB	rgb(4, 55, 59)
HSL	hsl(184, 87%, 12%)
HSV	hsv(184, 93%, 23%)
CMYK	cmyk(93.2%, 6.8%, 0%, 76.9%)
CIE-LAB	lab(20.34, -14.01, -7.08)
CIE-LCH	lch(20.34, 15.70, 206.79°)
OKLab	oklab(30.79% -0.0461 -0.0197)
OKLCH	oklch(30.79% 0.05 203.1)
XYZ	xyz(2.2053, 3.0737, 4.6139)
Luminance	0.0307 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04373B #3B0804

analogous

#043B24 #04373B #041B3B

triadic

#04373B #3B0437 #373B04

tetradic

#04373B #24043B #3B0804 #1B3B04

square

#04373B #24043B #3B0804 #1B3B04

split-complementary

#04373B #3B041B #3B2404

monochromatic

#021B1D #021B1D #04373B #086C74 #0CA2AE

Accessibility & contrast

On white

13.00

#04373B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#04373B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04373B

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04373B	#FFFFFF	#000000	##FFFFFF
##04373B	1.00	13.00	1.61	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32343B

Deuteranopia (green-blind)

#2A2F3B

Tritanopia (blue-blind)

#003A38

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #04373b;
/* rgb */ color: rgb(4, 55, 59);
/* oklch */ color: oklch(30.8% 0.050 203.1);

Tailwind

colors: {
  custom: {
    50: '#516e70',
    500: '#04373b',
    950: '#000000',
  },
}

SCSS

$custom: #04373b;
$custom-light: #516e70;
$custom-dark: #000000;

JSON

{
  "hex": "#04373b",
  "rgb": {
    "r": 4,
    "g": 55,
    "b": 59
  },
  "hsl": {
    "h": 184.364,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.30788,
    "c": 0.0501,
    "h": 203.1
  },
  "luminance": 0.03074
}

Semantic roles & 50–950 ramp

primary

#04373B

secondary

#7D251E

accent

#3A2AFD

background

#F4F6F6

surface

#E7EBEC

border

#C3C6C7

text

#020707

muted

#787A7A

Preview Lab

Preview with #04373B

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

Preview Lab → · Contrast checker → · Palette generator →