#11304B#11304B

#11304B is a dark, moderate cyan. Relative luminance 0.027; OKLCH L 30.1% C 0.061 H 247.8°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX#11304B
RGBrgb(17, 48, 75)
HSLhsl(208, 63%, 18%)
HSVhsv(208, 77%, 29%)
CMYKcmyk(77.3%, 36%, 0%, 70.6%)
CIE-LABlab(18.97, -0.92, -20.01)
CIE-LCHlch(18.97, 20.03, 267.36°)
OKLaboklab(30.07% -0.0231 -0.0567)
OKLCHoklch(30.07% 0.061 247.8)
XYZxyz(2.5576, 2.7408, 7.0495)
Luminance0.0274 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#11304B #4B2C11
analogous
#114B49 #11304B #11134B
triadic
#11304B #4B1130 #304B11
tetradic
#11304B #49114B #4B2C11 #134B11
square
#11304B #49114B #4B2C11 #134B11
split-complementary
#11304B #4B1113 #4B4911
monochromatic
#061019 #061019 #11304B #1C507D #2870AF

Accessibility & contrast

On white

13.56
#11304B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.55
#11304B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #11304B
13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##11304B#FFFFFF#000000##FFFFFF
##11304B1.0013.561.5513.56
#FFFFFF13.561.0021.001.00
#0000001.5521.001.0021.00
##FFFFFF13.561.0021.001.00

Color blindness preview

Protanopia (red-blind)
#24314C
Deuteranopia (green-blind)
#1C2C4A
Tritanopia (blue-blind)
#00363A
Achromatopsia (no color)
#2E2E2E

Design tokens & code

CSS
--color: #11304b;
/* rgb */ color: rgb(17, 48, 75);
/* oklch */ color: oklch(30.1% 0.061 247.8);
Tailwind
colors: {
  custom: {
    50: '#57687d',
    500: '#11304b',
    950: '#000000',
  },
}
SCSS
$custom: #11304b;
$custom-light: #57687d;
$custom-dark: #000000;
JSON
{
  "hex": "#11304b",
  "rgb": {
    "r": 17,
    "g": 48,
    "b": 75
  },
  "hsl": {
    "h": 207.931,
    "s": 63.043,
    "l": 18.039
  },
  "oklch": {
    "l": 0.30069,
    "c": 0.06123,
    "h": 247.8
  },
  "luminance": 0.02741
}

Semantic roles & 50–950 ramp

primary
#11304B
secondary
#845933
accent
#8E42E6
background
#F5F6F7
surface
#E9EBEE
border
#C5C6C9
text
#040609
muted
#797A7B

Preview Lab

Preview with #11304B

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

Preview Lab → · Contrast checker → · Palette generator →

#11304B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva