#10355B#10355B

#10355B is a dark, moderate cyan. Relative luminance 0.034; OKLCH L 32.5% C 0.079 H 252.1°. Best body text is #FFFFFF at 12.48:1 contrast (WCAG AA passes).

Color values

HEX#10355B
RGBrgb(16, 53, 91)
HSLhsl(210, 70%, 21%)
HSVhsv(210, 82%, 36%)
CMYKcmyk(82.4%, 41.8%, 0%, 64.3%)
CIE-LABlab(21.62, 2.17, -26.49)
CIE-LCHlch(21.62, 26.58, 274.69°)
OKLaboklab(32.45% -0.0244 -0.0756)
OKLCHoklch(32.45% 0.079 252.1)
XYZxyz(3.3744, 3.4113, 10.3761)
Luminance0.0341 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#10355B #5B3610
analogous
#105A5B #10355B #10105B
triadic
#10355B #5B1035 #355B10
tetradic
#10355B #5B105A #5B3610 #105B10
square
#10355B #5B105A #5B3610 #105B10
split-complementary
#10355B #5B1010 #5A5B10
monochromatic
#050F1A #071727 #10355B #19538F #2272C3

Accessibility & contrast

On white

12.48
#10355B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.68
#10355B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10355B
12.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##10355B#FFFFFF#000000##FFFFFF
##10355B1.0012.481.6812.48
#FFFFFF12.481.0021.001.00
#0000001.6821.001.0021.00
##FFFFFF12.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#23385D
Deuteranopia (green-blind)
#17315A
Tritanopia (blue-blind)
#003E43
Achromatopsia (no color)
#343434

Design tokens & code

CSS
--color: #10355b;
/* rgb */ color: rgb(16, 53, 91);
/* oklch */ color: oklch(32.5% 0.079 252.1);
Tailwind
colors: {
  custom: {
    50: '#5b6b89',
    500: '#10355b',
    950: '#000000',
  },
}
SCSS
$custom: #10355b;
$custom-light: #5b6b89;
$custom-dark: #000000;
JSON
{
  "hex": "#10355b",
  "rgb": {
    "r": 16,
    "g": 53,
    "b": 91
  },
  "hsl": {
    "h": 210.4,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.32452,
    "c": 0.07941,
    "h": 252.1
  },
  "luminance": 0.03412
}

Semantic roles & 50–950 ramp

primary
#10355B
secondary
#946433
accent
#953BED
background
#F5F6F8
surface
#E9EBF0
border
#C5C6CB
text
#04060B
muted
#797A7C

Preview Lab

Preview with #10355B

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

Preview Lab → · Contrast checker → · Palette generator →

#10355B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva