#0B284B#0B284B

#0B284B is a dark, moderate cyan. Relative luminance 0.021; OKLCH L 27.7% C 0.073 H 255.2°. Best body text is #FFFFFF at 14.79:1 contrast (WCAG AA passes).

Color values

HEX	#0B284B
RGB	rgb(11, 40, 75)
HSL	hsl(213, 74%, 17%)
HSV	hsv(213, 85%, 29%)
CMYK	cmyk(85.3%, 46.7%, 0%, 70.6%)
CIE-LAB	lab(15.99, 3.89, -24.76)
CIE-LCH	lch(15.99, 25.07, 278.94°)
OKLab	oklab(27.67% -0.0187 -0.0709)
OKLCH	oklch(27.67% 0.073 255.2)
XYZ	xyz(2.1663, 2.0965, 6.9457)
Luminance	0.0210 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B284B #4B2E0B

analogous

#0B484B #0B284B #0E0B4B

triadic

#0B284B #4B0B28 #284B0B

tetradic

#0B284B #4B0B48 #4B2E0B #0B4B0E

square

#0B284B #4B0B48 #4B2E0B #0B4B0E

split-complementary

#0B284B #4B0E0B #484B0B

monochromatic

#040E1B #040E1B #0B284B #134480 #1B61B6

Accessibility & contrast

On white

14.79

#0B284B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#0B284B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B284B

14.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B284B	#FFFFFF	#000000	##FFFFFF
##0B284B	1.00	14.79	1.42	14.79
#FFFFFF	14.79	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#172B4C

Deuteranopia (green-blind)

#0B254A

Tritanopia (blue-blind)

#003035

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #0b284b;
/* rgb */ color: rgb(11, 40, 75);
/* oklch */ color: oklch(27.7% 0.073 255.2);

Tailwind

colors: {
  custom: {
    50: '#55617d',
    500: '#0b284b',
    950: '#000000',
  },
}

SCSS

$custom: #0b284b;
$custom-light: #55617d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b284b",
  "rgb": {
    "r": 11,
    "g": 40,
    "b": 75
  },
  "hsl": {
    "h": 212.813,
    "s": 74.419,
    "l": 16.863
  },
  "oklch": {
    "l": 0.27668,
    "c": 0.0733,
    "h": 255.2
  },
  "luminance": 0.02097
}

Semantic roles & 50–950 ramp

primary

#0B284B

secondary

#875D2B

accent

#9D37F1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03050A

muted

#78797C

Preview Lab

Preview with #0B284B

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

Preview Lab → · Contrast checker → · Palette generator →