#10305B#10305B

#10305B is a dark, moderate cyan. Relative luminance 0.030; OKLCH L 31.2% C 0.086 H 256.9°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX#10305B
RGBrgb(16, 48, 91)
HSLhsl(214, 70%, 21%)
HSVhsv(214, 82%, 36%)
CMYKcmyk(82.4%, 47.3%, 0%, 64.3%)
CIE-LABlab(19.96, 5.75, -29.14)
CIE-LCHlch(19.96, 29.70, 281.16°)
OKLaboklab(31.16% -0.0194 -0.0835)
OKLCHoklch(31.16% 0.086 256.9)
XYZxyz(3.1583, 2.9790, 10.3041)
Luminance0.0298 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#10305B #5B3B10
analogous
#10555B #10305B #15105B
triadic
#10305B #5B1030 #305B10
tetradic
#10305B #5B1055 #5B3B10 #105B15
square
#10305B #5B1055 #5B3B10 #105B15
split-complementary
#10305B #5B1510 #555B10
monochromatic
#050E1A #071527 #10305B #194B8F #2267C3

Accessibility & contrast

On white

13.16
#10305B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.60
#10305B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10305B
13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##10305B#FFFFFF#000000##FFFFFF
##10305B1.0013.161.6013.16
#FFFFFF13.161.0021.001.00
#0000001.6021.001.0021.00
##FFFFFF13.161.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1A345D
Deuteranopia (green-blind)
#0B2D5A
Tritanopia (blue-blind)
#003A41
Achromatopsia (no color)
#303030

Design tokens & code

CSS
--color: #10305b;
/* rgb */ color: rgb(16, 48, 91);
/* oklch */ color: oklch(31.2% 0.086 256.9);
Tailwind
colors: {
  custom: {
    50: '#5b678a',
    500: '#10305b',
    950: '#000000',
  },
}
SCSS
$custom: #10305b;
$custom-light: #5b678a;
$custom-dark: #000000;
JSON
{
  "hex": "#10305b",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 91
  },
  "hsl": {
    "h": 214.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.3116,
    "c": 0.08569,
    "h": 256.9
  },
  "luminance": 0.02979
}

Semantic roles & 50–950 ramp

primary
#10305B
secondary
#946B33
accent
#A13BED
background
#F5F6F8
surface
#E9EBF0
border
#C5C6CB
text
#04060B
muted
#797A7C

Preview Lab

Preview with #10305B

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

Preview Lab → · Contrast checker → · Palette generator →

#10305B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva