#0A4240#0A4240

#0A4240 is a dark, muted teal. Relative luminance 0.043; OKLCH L 34.5% C 0.055 H 191.3°. Best body text is #FFFFFF at 11.25:1 contrast (WCAG AA passes).

Color values

HEX	#0A4240
RGB	rgb(10, 66, 64)
HSL	hsl(178, 74%, 15%)
HSV	hsv(178, 85%, 26%)
CMYK	cmyk(84.8%, 0%, 3%, 74.1%)
CIE-LAB	lab(24.74, -17.60, -3.82)
CIE-LCH	lch(24.74, 18.01, 192.24°)
OKLab	oklab(34.46% -0.0536 -0.0107)
OKLCH	oklch(34.46% 0.055 191.3)
XYZ	xyz(2.9984, 4.3308, 5.5274)
Luminance	0.0433 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A4240 #420A0C

analogous

#0A4224 #0A4240 #0A2842

triadic

#0A4240 #400A42 #42400A

tetradic

#0A4240 #240A42 #420A0C #28420A

square

#0A4240 #240A42 #420A0C #28420A

split-complementary

#0A4240 #420A28 #42240A

monochromatic

#041B1A #041B1A #0A4240 #127774 #1AACA7

Accessibility & contrast

On white

11.25

#0A4240 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#0A4240 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A4240

11.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A4240	#FFFFFF	#000000	##FFFFFF
##0A4240	1.00	11.25	1.87	11.25
#FFFFFF	11.25	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3E40

Deuteranopia (green-blind)

#363840

Tritanopia (blue-blind)

#004441

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #0a4240;
/* rgb */ color: rgb(10, 66, 64);
/* oklch */ color: oklch(34.5% 0.055 191.3);

Tailwind

colors: {
  custom: {
    50: '#557674',
    500: '#0a4240',
    950: '#000000',
  },
}

SCSS

$custom: #0a4240;
$custom-light: #557674;
$custom-dark: #000000;

JSON

{
  "hex": "#0a4240",
  "rgb": {
    "r": 10,
    "g": 66,
    "b": 64
  },
  "hsl": {
    "h": 177.857,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.34464,
    "c": 0.05462,
    "h": 191.3
  },
  "luminance": 0.04331
}

Semantic roles & 50–950 ramp

primary

#0A4240

secondary

#7F292C

accent

#373EF0

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #0A4240

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

Preview Lab → · Contrast checker → · Palette generator →