#0B3B4E#0B3B4E

#0B3B4E is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.059 H 229.7°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#0B3B4E
RGB	rgb(11, 59, 78)
HSL	hsl(197, 75%, 17%)
HSV	hsv(197, 86%, 31%)
CMYK	cmyk(85.9%, 24.4%, 0%, 69.4%)
CIE-LAB	lab(22.82, -7.99, -16.01)
CIE-LCH	lch(22.82, 17.90, 243.48°)
OKLab	oklab(33.12% -0.0382 -0.045)
OKLCH	oklch(33.12% 0.059 229.7)
XYZ	xyz(3.0766, 3.7488, 7.7677)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3B4E #4E1E0B

analogous

#0B4E40 #0B3B4E #0B194E

triadic

#0B3B4E #4E0B3B #3B4E0B

tetradic

#0B3B4E #400B4E #4E1E0B #194E0B

square

#0B3B4E #400B4E #4E1E0B #194E0B

split-complementary

#0B3B4E #4E0B19 #4E400B

monochromatic

#04141B #04141B #0B3B4E #136484 #1A8CB9

Accessibility & contrast

On white

12.00

#0B3B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#0B3B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3B4E

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3B4E	#FFFFFF	#000000	##FFFFFF
##0B3B4E	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313A4F

Deuteranopia (green-blind)

#28344E

Tritanopia (blue-blind)

#004041

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #0b3b4e;
/* rgb */ color: rgb(11, 59, 78);
/* oklch */ color: oklch(33.1% 0.059 229.7);

Tailwind

colors: {
  custom: {
    50: '#57707f',
    500: '#0b3b4e',
    950: '#000000',
  },
}

SCSS

$custom: #0b3b4e;
$custom-light: #57707f;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3b4e",
  "rgb": {
    "r": 11,
    "g": 59,
    "b": 78
  },
  "hsl": {
    "h": 197.015,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.33123,
    "c": 0.05906,
    "h": 229.7
  },
  "luminance": 0.03749
}

Semantic roles & 50–950 ramp

primary

#0B3B4E

secondary

#8A462B

accent

#6B36F2

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#04070A

muted

#797A7C

Preview Lab

Preview with #0B3B4E

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

Preview Lab → · Contrast checker → · Palette generator →