#0B3B4B#0B3B4B

#0B3B4B is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.0% C 0.056 H 225.3°. Best body text is #FFFFFF at 12.06:1 contrast (WCAG AA passes).

Color values

HEX	#0B3B4B
RGB	rgb(11, 59, 75)
HSL	hsl(195, 74%, 17%)
HSV	hsv(195, 85%, 29%)
CMYK	cmyk(85.3%, 21.3%, 0%, 70.6%)
CIE-LAB	lab(22.68, -9.20, -14.24)
CIE-LCH	lch(22.68, 16.96, 237.15°)
OKLab	oklab(32.96% -0.0395 -0.04)
OKLCH	oklch(32.96% 0.056 225.3)
XYZ	xyz(2.9715, 3.7067, 7.2141)
Luminance	0.0371 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3B4B #4B1B0B

analogous

#0B4B3B #0B3B4B #0B1B4B

triadic

#0B3B4B #4B0B3B #3B4B0B

tetradic

#0B3B4B #3B0B4B #4B1B0B #1B4B0B

square

#0B3B4B #3B0B4B #4B1B0B #1B4B0B

split-complementary

#0B3B4B #4B0B1B #4B3B0B

monochromatic

#04151B #04151B #0B3B4B #136580 #1B8FB6

Accessibility & contrast

On white

12.06

#0B3B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#0B3B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3B4B

12.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3B4B	#FFFFFF	#000000	##FFFFFF
##0B3B4B	1.00	12.06	1.74	12.06
#FFFFFF	12.06	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#323A4C

Deuteranopia (green-blind)

#2A334B

Tritanopia (blue-blind)

#004040

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #0b3b4b;
/* rgb */ color: rgb(11, 59, 75);
/* oklch */ color: oklch(33.0% 0.056 225.3);

Tailwind

colors: {
  custom: {
    50: '#56717d',
    500: '#0b3b4b',
    950: '#000000',
  },
}

SCSS

$custom: #0b3b4b;
$custom-light: #56717d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3b4b",
  "rgb": {
    "r": 11,
    "g": 59,
    "b": 75
  },
  "hsl": {
    "h": 195,
    "s": 74.419,
    "l": 16.863
  },
  "oklch": {
    "l": 0.32958,
    "c": 0.05619,
    "h": 225.3
  },
  "luminance": 0.03707
}

Semantic roles & 50–950 ramp

primary

#0B3B4B

secondary

#87422B

accent

#6537F1

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#030709

muted

#787A7B

Preview Lab

Preview with #0B3B4B

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

Preview Lab → · Contrast checker → · Palette generator →