#043640#043640

#043640 is a dark, muted cyan. Relative luminance 0.030; OKLCH L 30.7% C 0.052 H 215.2°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#043640
RGB	rgb(4, 54, 64)
HSL	hsl(190, 88%, 13%)
HSV	hsv(190, 94%, 25%)
CMYK	cmyk(93.8%, 15.6%, 0%, 74.9%)
CIE-LAB	lab(20.18, -11.45, -10.71)
CIE-LCH	lch(20.18, 15.68, 223.10°)
OKLab	oklab(30.73% -0.0424 -0.0299)
OKLCH	oklch(30.73% 0.052 215.2)
XYZ	xyz(2.2942, 3.0340, 5.3142)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#043640 #400E04

analogous

#04402C #043640 #041840

triadic

#043640 #400436 #364004

tetradic

#043640 #2C0440 #400E04 #184004

square

#043640 #2C0440 #400E04 #184004

split-complementary

#043640 #400418 #402C04

monochromatic

#02181D #02181D #043640 #08677A #0B97B3

Accessibility & contrast

On white

13.07

#043640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#043640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #043640

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##043640	#FFFFFF	#000000	##FFFFFF
##043640	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3441

Deuteranopia (green-blind)

#272E40

Tritanopia (blue-blind)

#003A39

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #043640;
/* rgb */ color: rgb(4, 54, 64);
/* oklch */ color: oklch(30.7% 0.052 215.2);

Tailwind

colors: {
  custom: {
    50: '#516d74',
    500: '#043640',
    950: '#000000',
  },
}

SCSS

$custom: #043640;
$custom-light: #516d74;
$custom-dark: #000000;

JSON

{
  "hex": "#043640",
  "rgb": {
    "r": 4,
    "g": 54,
    "b": 64
  },
  "hsl": {
    "h": 190,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.30733,
    "c": 0.05189,
    "h": 215.2
  },
  "luminance": 0.03034
}

Semantic roles & 50–950 ramp

primary

#043640

secondary

#812F1F

accent

#4D29FE

background

#F4F6F7

surface

#E7EBED

border

#C3C6C8

text

#030708

muted

#787A7B

Preview Lab

Preview with #043640

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

Preview Lab → · Contrast checker → · Palette generator →