#043F3F#043F3F

#043F3F is a dark, muted teal. Relative luminance 0.039; OKLCH L 33.4% C 0.055 H 194.8°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#043F3F
RGB	rgb(4, 63, 63)
HSL	hsl(180, 88%, 13%)
HSV	hsv(180, 94%, 25%)
CMYK	cmyk(93.7%, 0%, 0%, 75.3%)
CIE-LAB	lab(23.47, -17.11, -5.06)
CIE-LCH	lch(23.47, 17.84, 196.47°)
OKLab	oklab(33.39% -0.0532 -0.0141)
OKLCH	oklch(33.39% 0.055 194.8)
XYZ	xyz(2.7244, 3.9394, 5.3184)
Luminance	0.0394 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#043F3F #3F0404

analogous

#043F21 #043F3F #04213F

triadic

#043F3F #3F043F #3F3F04

tetradic

#043F3F #21043F #3F0404 #213F04

square

#043F3F #21043F #3F0404 #213F04

split-complementary

#043F3F #3F0421 #3F2104

monochromatic

#021D1D #021D1D #043F3F #087979 #0BB2B2

Accessibility & contrast

On white

11.74

#043F3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#043F3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #043F3F

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##043F3F	#FFFFFF	#000000	##FFFFFF
##043F3F	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3B3F

Deuteranopia (green-blind)

#32353F

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #043f3f;
/* rgb */ color: rgb(4, 63, 63);
/* oklch */ color: oklch(33.4% 0.055 194.8);

Tailwind

colors: {
  custom: {
    50: '#537474',
    500: '#043f3f',
    950: '#000000',
  },
}

SCSS

$custom: #043f3f;
$custom-light: #537474;
$custom-dark: #000000;

JSON

{
  "hex": "#043f3f",
  "rgb": {
    "r": 4,
    "g": 63,
    "b": 63
  },
  "hsl": {
    "h": 180,
    "s": 88.06,
    "l": 13.137
  },
  "oklch": {
    "l": 0.33385,
    "c": 0.055,
    "h": 194.8
  },
  "luminance": 0.0394
}

Semantic roles & 50–950 ramp

primary

#043F3F

secondary

#801E1E

accent

#2A2AFE

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #043F3F

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

Preview Lab → · Contrast checker → · Palette generator →