#123C66#123C66

#123C66 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.1% C 0.086 H 251.7°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX#123C66
RGBrgb(18, 60, 102)
HSLhsl(210, 70%, 24%)
HSVhsv(210, 82%, 40%)
CMYKcmyk(82.4%, 41.2%, 0%, 60%)
CIE-LABlab(24.70, 2.22, -28.76)
CIE-LCHlch(24.70, 28.84, 274.41°)
OKLaboklab(35.1% -0.0271 -0.0821)
OKLCHoklch(35.1% 0.086 251.7)
XYZxyz(4.2627, 4.3191, 13.1768)
Luminance0.0432 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123C66 #663C12
analogous
#126666 #123C66 #121266
triadic
#123C66 #66123C #3C6612
tetradic
#123C66 #661266 #663C12 #126612
square
#123C66 #661266 #663C12 #126612
split-complementary
#123C66 #661212 #666612
monochromatic
#050F1A #091D32 #123C66 #1B5B9A #2479CE

Accessibility & contrast

On white

11.27
#123C66 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.86
#123C66 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C66
11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123C66#FFFFFF#000000##FFFFFF
##123C661.0011.271.8611.27
#FFFFFF11.271.0021.001.00
#0000001.8621.001.0021.00
##FFFFFF11.271.0021.001.00

Color blindness preview

Protanopia (red-blind)
#283F68
Deuteranopia (green-blind)
#1B3765
Tritanopia (blue-blind)
#00464C
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #123c66;
/* rgb */ color: rgb(18, 60, 102);
/* oklch */ color: oklch(35.1% 0.086 251.7);
Tailwind
colors: {
  custom: {
    50: '#5e7192',
    500: '#123c66',
    950: '#000000',
  },
}
SCSS
$custom: #123c66;
$custom-light: #5e7192;
$custom-dark: #000000;
JSON
{
  "hex": "#123c66",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 210,
    "s": 70,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35101,
    "c": 0.08642,
    "h": 251.7
  },
  "luminance": 0.0432
}

Semantic roles & 50–950 ramp

primary
#123C66
secondary
#9E6A36
accent
#943BED
background
#F5F6F9
surface
#EAECF1
border
#C6C7CB
text
#05070D
muted
#797A7E

Preview Lab

Preview with #123C66

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

Preview Lab → · Contrast checker → · Palette generator →

#123C66 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva