#123C55#123C55

#123C55 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.063 H 239.0°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX#123C55
RGBrgb(18, 60, 85)
HSLhsl(202, 65%, 20%)
HSVhsv(202, 79%, 33%)
CMYKcmyk(78.8%, 29.4%, 0%, 66.7%)
CIE-LABlab(23.72, -4.81, -19.22)
CIE-LCHlch(23.72, 19.81, 255.96°)
OKLaboklab(34.01% -0.0326 -0.0542)
OKLCHoklch(34.01% 0.063 239)
XYZxyz(3.5044, 4.0158, 9.1830)
Luminance0.0402 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123C55 #552B12
analogous
#12554C #123C55 #121A55
triadic
#123C55 #55123C #3C5512
tetradic
#123C55 #4C1255 #552B12 #1A5512
square
#123C55 #4C1255 #552B12 #1A5512
split-complementary
#123C55 #55121A #554C12
monochromatic
#051219 #071822 #123C55 #1D6088 #2783BA

Accessibility & contrast

On white

11.65
#123C55 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.80
#123C55 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C55
11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123C55#FFFFFF#000000##FFFFFF
##123C551.0011.651.8011.65
#FFFFFF11.651.0021.001.00
#0000001.8021.001.0021.00
##FFFFFF11.651.0021.001.00

Color blindness preview

Protanopia (red-blind)
#303C56
Deuteranopia (green-blind)
#273655
Tritanopia (blue-blind)
#004245
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #123c55;
/* rgb */ color: rgb(18, 60, 85);
/* oklch */ color: oklch(34.0% 0.063 239.0);
Tailwind
colors: {
  custom: {
    50: '#5a7185',
    500: '#123c55',
    950: '#000000',
  },
}
SCSS
$custom: #123c55;
$custom-light: #5a7185;
$custom-dark: #000000;
JSON
{
  "hex": "#123c55",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 85
  },
  "hsl": {
    "h": 202.388,
    "s": 65.049,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34013,
    "c": 0.0633,
    "h": 239
  },
  "luminance": 0.04016
}

Semantic roles & 50–950 ramp

primary
#123C55
secondary
#8E5635
accent
#7F40E8
background
#F5F6F8
surface
#E9ECEF
border
#C5C7CA
text
#04070B
muted
#797A7C

Preview Lab

Preview with #123C55

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

Preview Lab → · Contrast checker → · Palette generator →

#123C55 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva