#04383B#04383B

#04383B is a dark, muted teal. Relative luminance 0.032; OKLCH L 31.1% C 0.051 H 201.0°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#04383B
RGB	rgb(4, 56, 59)
HSL	hsl(183, 87%, 12%)
HSV	hsv(183, 93%, 23%)
CMYK	cmyk(93.2%, 5.1%, 0%, 76.9%)
CIE-LAB	lab(20.71, -14.60, -6.51)
CIE-LCH	lch(20.71, 15.99, 204.04°)
OKLab	oklab(31.09% -0.0472 -0.0181)
OKLCH	oklch(31.09% 0.051 201)
XYZ	xyz(2.2533, 3.1696, 4.6299)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04383B #3B0704

analogous

#043B23 #04383B #041C3B

triadic

#04383B #3B0438 #383B04

tetradic

#04383B #23043B #3B0704 #1C3B04

square

#04383B #23043B #3B0704 #1C3B04

split-complementary

#04383B #3B041C #3B2304

monochromatic

#021B1D #021B1D #04383B #086E74 #0CA5AE

Accessibility & contrast

On white

12.85

#04383B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#04383B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04383B

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04383B	#FFFFFF	#000000	##FFFFFF
##04383B	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33353B

Deuteranopia (green-blind)

#2B303B

Tritanopia (blue-blind)

#003B39

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #04383b;
/* rgb */ color: rgb(4, 56, 59);
/* oklch */ color: oklch(31.1% 0.051 201.0);

Tailwind

colors: {
  custom: {
    50: '#516f70',
    500: '#04383b',
    950: '#000000',
  },
}

SCSS

$custom: #04383b;
$custom-light: #516f70;
$custom-dark: #000000;

JSON

{
  "hex": "#04383b",
  "rgb": {
    "r": 4,
    "g": 56,
    "b": 59
  },
  "hsl": {
    "h": 183.273,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.31092,
    "c": 0.05059,
    "h": 201
  },
  "luminance": 0.0317
}

Semantic roles & 50–950 ramp

primary

#04383B

secondary

#7D231E

accent

#362AFD

background

#F4F6F6

surface

#E7ECEC

border

#C3C7C7

text

#020707

muted

#787A7A

Preview Lab

Preview with #04383B

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

Preview Lab → · Contrast checker → · Palette generator →