#043540#043540

#043540 is a dark, muted cyan. Relative luminance 0.029; OKLCH L 30.4% C 0.052 H 217.4°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#043540
RGB	rgb(4, 53, 64)
HSL	hsl(191, 88%, 13%)
HSV	hsv(191, 94%, 25%)
CMYK	cmyk(93.8%, 17.2%, 0%, 74.9%)
CIE-LAB	lab(19.81, -10.82, -11.28)
CIE-LCH	lch(19.81, 15.63, 226.18°)
OKLab	oklab(30.43% -0.0412 -0.0316)
OKLCH	oklch(30.43% 0.052 217.4)
XYZ	xyz(2.2482, 2.9419, 5.2988)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#043540 #400F04

analogous

#04402D #043540 #041740

triadic

#043540 #400435 #354004

tetradic

#043540 #2D0440 #400F04 #174004

square

#043540 #2D0440 #400F04 #174004

split-complementary

#043540 #400417 #402D04

monochromatic

#02181D #02181D #043540 #08657A #0B94B3

Accessibility & contrast

On white

13.22

#043540 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#043540 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #043540

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##043540	#FFFFFF	#000000	##FFFFFF
##043540	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3341

Deuteranopia (green-blind)

#262D40

Tritanopia (blue-blind)

#003938

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #043540;
/* rgb */ color: rgb(4, 53, 64);
/* oklch */ color: oklch(30.4% 0.052 217.4);

Tailwind

colors: {
  custom: {
    50: '#516c74',
    500: '#043540',
    950: '#000000',
  },
}

SCSS

$custom: #043540;
$custom-light: #516c74;
$custom-dark: #000000;

JSON

{
  "hex": "#043540",
  "rgb": {
    "r": 4,
    "g": 53,
    "b": 64
  },
  "hsl": {
    "h": 191,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.30434,
    "c": 0.05193,
    "h": 217.4
  },
  "luminance": 0.02942
}

Semantic roles & 50–950 ramp

primary

#043540

secondary

#81311F

accent

#5029FE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#020708

muted

#787A7B

Preview Lab

Preview with #043540

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

Preview Lab → · Contrast checker → · Palette generator →