#123E66#123E66

#123E66 is a dark, moderate cyan. Relative luminance 0.045; OKLCH L 35.6% C 0.084 H 249.8°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX#123E66
RGBrgb(18, 62, 102)
HSLhsl(209, 70%, 24%)
HSVhsv(209, 82%, 40%)
CMYKcmyk(82.4%, 39.2%, 0%, 60%)
CIE-LABlab(25.36, 0.84, -27.71)
CIE-LCHlch(25.36, 27.72, 271.74°)
OKLaboklab(35.62% -0.0291 -0.079)
OKLCHoklch(35.62% 0.084 249.8)
XYZxyz(4.3694, 4.5326, 13.2124)
Luminance0.0453 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123E66 #663A12
analogous
#126664 #123E66 #121466
triadic
#123E66 #66123E #3E6612
tetradic
#123E66 #641266 #663A12 #146612
square
#123E66 #641266 #663A12 #146612
split-complementary
#123E66 #661214 #666412
monochromatic
#05101A #091E32 #123E66 #1B5E9A #247DCE

Accessibility & contrast

On white

11.01
#123E66 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.91
#123E66 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E66
11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123E66#FFFFFF#000000##FFFFFF
##123E661.0011.011.9111.01
#FFFFFF11.011.0021.001.00
#0000001.9121.001.0021.00
##FFFFFF11.011.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2B4068
Deuteranopia (green-blind)
#1F3965
Tritanopia (blue-blind)
#00484D
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #123e66;
/* rgb */ color: rgb(18, 62, 102);
/* oklch */ color: oklch(35.6% 0.084 249.8);
Tailwind
colors: {
  custom: {
    50: '#5e7292',
    500: '#123e66',
    950: '#000000',
  },
}
SCSS
$custom: #123e66;
$custom-light: #5e7292;
$custom-dark: #000000;
JSON
{
  "hex": "#123e66",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 102
  },
  "hsl": {
    "h": 208.571,
    "s": 70,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35618,
    "c": 0.08413,
    "h": 249.8
  },
  "luminance": 0.04533
}

Semantic roles & 50–950 ramp

primary
#123E66
secondary
#9E6736
accent
#903BED
background
#F5F6F9
surface
#EAECF1
border
#C6C7CB
text
#05080D
muted
#797B7E

Preview Lab

Preview with #123E66

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

Preview Lab → · Contrast checker → · Palette generator →

#123E66 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva