#0B3F40#0B3F40

#0B3F40 is a dark, muted teal. Relative luminance 0.040; OKLCH L 33.6% C 0.052 H 196.9°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F40
RGB	rgb(11, 63, 64)
HSL	hsl(181, 71%, 15%)
HSV	hsv(181, 83%, 25%)
CMYK	cmyk(82.8%, 1.6%, 0%, 74.9%)
CIE-LAB	lab(23.66, -15.78, -5.43)
CIE-LCH	lch(23.66, 16.68, 198.98°)
OKLab	oklab(33.59% -0.0496 -0.0151)
OKLCH	oklch(33.59% 0.052 196.9)
XYZ	xyz(2.8405, 3.9960, 5.4711)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F40 #400C0B

analogous

#0B4027 #0B3F40 #0B2540

triadic

#0B3F40 #400B3F #3F400B

tetradic

#0B3F40 #270B40 #400C0B #25400B

square

#0B3F40 #270B40 #400C0B #25400B

split-complementary

#0B3F40 #400B25 #40270B

monochromatic

#041A1A #041A1A #0B3F40 #147274 #1DA6A8

Accessibility & contrast

On white

11.67

#0B3F40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#0B3F40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F40

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F40	#FFFFFF	#000000	##FFFFFF
##0B3F40	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A3C40

Deuteranopia (green-blind)

#323640

Tritanopia (blue-blind)

#00413F

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #0b3f40;
/* rgb */ color: rgb(11, 63, 64);
/* oklch */ color: oklch(33.6% 0.052 196.9);

Tailwind

colors: {
  custom: {
    50: '#557474',
    500: '#0b3f40',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f40;
$custom-light: #557474;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f40",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 181.132,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.33594,
    "c": 0.05182,
    "h": 196.9
  },
  "luminance": 0.03996
}

Semantic roles & 50–950 ramp

primary

#0B3F40

secondary

#7D2C2A

accent

#3E3AED

background

#F5F7F7

surface

#E9EDED

border

#C5C8C8

text

#030808

muted

#787B7B

Preview Lab

Preview with #0B3F40

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

Preview Lab → · Contrast checker → · Palette generator →