#0B3F4E#0B3F4E

#0B3F4E is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.3% C 0.058 H 222.2°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#0B3F4E
RGB	rgb(11, 63, 78)
HSL	hsl(193, 75%, 17%)
HSV	hsv(193, 86%, 31%)
CMYK	cmyk(85.9%, 19.2%, 0%, 69.4%)
CIE-LAB	lab(24.24, -10.51, -13.81)
CIE-LCH	lch(24.24, 17.36, 232.72°)
OKLab	oklab(34.26% -0.0427 -0.0387)
OKLCH	oklch(34.26% 0.058 222.2)
XYZ	xyz(3.2901, 4.1758, 7.8389)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3F4E #4E1A0B

analogous

#0B4E3C #0B3F4E #0B1D4E

triadic

#0B3F4E #4E0B3F #3F4E0B

tetradic

#0B3F4E #3C0B4E #4E1A0B #1D4E0B

square

#0B3F4E #3C0B4E #4E1A0B #1D4E0B

split-complementary

#0B3F4E #4E0B1D #4E3C0B

monochromatic

#04161B #04161B #0B3F4E #136A84 #1A96B9

Accessibility & contrast

On white

11.44

#0B3F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#0B3F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3F4E

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3F4E	#FFFFFF	#000000	##FFFFFF
##0B3F4E	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363D4F

Deuteranopia (green-blind)

#2D374E

Tritanopia (blue-blind)

#004444

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #0b3f4e;
/* rgb */ color: rgb(11, 63, 78);
/* oklch */ color: oklch(34.3% 0.058 222.2);

Tailwind

colors: {
  custom: {
    50: '#57747f',
    500: '#0b3f4e',
    950: '#000000',
  },
}

SCSS

$custom: #0b3f4e;
$custom-light: #57747f;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3f4e",
  "rgb": {
    "r": 11,
    "g": 63,
    "b": 78
  },
  "hsl": {
    "h": 193.433,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.34262,
    "c": 0.05763,
    "h": 222.2
  },
  "luminance": 0.04176
}

Semantic roles & 50–950 ramp

primary

#0B3F4E

secondary

#8A402B

accent

#6036F2

background

#F5F7F7

surface

#E9EDEE

border

#C5C8C9

text

#04080A

muted

#797B7C

Preview Lab

Preview with #0B3F4E

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

Preview Lab → · Contrast checker → · Palette generator →