#0B3040#0B3040

#0B3040 is a dark, muted cyan. Relative luminance 0.026; OKLCH L 29.2% C 0.050 H 230.9°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#0B3040
RGB	rgb(11, 48, 64)
HSL	hsl(198, 71%, 15%)
HSV	hsv(198, 83%, 25%)
CMYK	cmyk(82.8%, 25%, 0%, 74.9%)
CIE-LAB	lab(18.17, -6.52, -13.80)
CIE-LCH	lch(18.17, 15.26, 244.71°)
OKLab	oklab(29.17% -0.0315 -0.0388)
OKLCH	oklch(29.17% 0.05 230.9)
XYZ	xyz(2.1200, 2.5550, 5.2309)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B3040 #401B0B

analogous

#0B4036 #0B3040 #0B1640

triadic

#0B3040 #400B30 #30400B

tetradic

#0B3040 #360B40 #401B0B #16400B

square

#0B3040 #360B40 #401B0B #16400B

split-complementary

#0B3040 #400B16 #40360B

monochromatic

#04141A #04141A #0B3040 #145774 #1D7EA8

Accessibility & contrast

On white

13.90

#0B3040 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#0B3040 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B3040

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B3040	#FFFFFF	#000000	##FFFFFF
##0B3040	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282F41

Deuteranopia (green-blind)

#212A40

Tritanopia (blue-blind)

#003435

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #0b3040;
/* rgb */ color: rgb(11, 48, 64);
/* oklch */ color: oklch(29.2% 0.050 230.9);

Tailwind

colors: {
  custom: {
    50: '#536874',
    500: '#0b3040',
    950: '#000000',
  },
}

SCSS

$custom: #0b3040;
$custom-light: #536874;
$custom-dark: #000000;

JSON

{
  "hex": "#0b3040",
  "rgb": {
    "r": 11,
    "g": 48,
    "b": 64
  },
  "hsl": {
    "h": 198.113,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.29171,
    "c": 0.04997,
    "h": 230.9
  },
  "luminance": 0.02555
}

Semantic roles & 50–950 ramp

primary

#0B3040

secondary

#7D432A

accent

#703AED

background

#F5F6F7

surface

#E8EBED

border

#C4C6C8

text

#030608

muted

#787A7B

Preview Lab

Preview with #0B3040

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

Preview Lab → · Contrast checker → · Palette generator →