#10304C#10304C

#10304C is a dark, moderate cyan. Relative luminance 0.027; OKLCH L 30.1% C 0.063 H 248.1°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX#10304C
RGBrgb(16, 48, 76)
HSLhsl(208, 65%, 18%)
HSVhsv(208, 79%, 30%)
CMYKcmyk(78.9%, 36.8%, 0%, 70.2%)
CIE-LABlab(18.99, -0.68, -20.65)
CIE-LCHlch(18.99, 20.66, 268.13°)
OKLaboklab(30.09% -0.0236 -0.0586)
OKLCHoklch(30.09% 0.063 248.1)
XYZxyz(2.5747, 2.7456, 7.2303)
Luminance0.0275 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#10304C #4C2C10
analogous
#104C4A #10304C #10124C
triadic
#10304C #4C1030 #304C10
tetradic
#10304C #4A104C #4C2C10 #124C10
square
#10304C #4A104C #4C2C10 #124C10
split-complementary
#10304C #4C1012 #4C4A10
monochromatic
#051019 #051019 #10304C #1B507F #2570B1

Accessibility & contrast

On white

13.56
#10304C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.55
#10304C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10304C
13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##10304C#FFFFFF#000000##FFFFFF
##10304C1.0013.561.5513.56
#FFFFFF13.561.0021.001.00
#0000001.5521.001.0021.00
##FFFFFF13.561.0021.001.00

Color blindness preview

Protanopia (red-blind)
#23314D
Deuteranopia (green-blind)
#1B2C4B
Tritanopia (blue-blind)
#00373A
Achromatopsia (no color)
#2E2E2E

Design tokens & code

CSS
--color: #10304c;
/* rgb */ color: rgb(16, 48, 76);
/* oklch */ color: oklch(30.1% 0.063 248.1);
Tailwind
colors: {
  custom: {
    50: '#57687e',
    500: '#10304c',
    950: '#000000',
  },
}
SCSS
$custom: #10304c;
$custom-light: #57687e;
$custom-dark: #000000;
JSON
{
  "hex": "#10304c",
  "rgb": {
    "r": 16,
    "g": 48,
    "b": 76
  },
  "hsl": {
    "h": 208,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.30093,
    "c": 0.06315,
    "h": 248.1
  },
  "luminance": 0.02746
}

Semantic roles & 50–950 ramp

primary
#10304C
secondary
#865932
accent
#8E40E8
background
#F5F6F7
surface
#E9EBEE
border
#C5C6C9
text
#04060A
muted
#797A7C

Preview Lab

Preview with #10304C

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

Preview Lab → · Contrast checker → · Palette generator →

#10304C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva