#123E5C#123E5C

#123E5C is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.071 H 242.7°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX#123E5C
RGBrgb(18, 62, 92)
HSLhsl(204, 67%, 22%)
HSVhsv(204, 80%, 36%)
CMYKcmyk(80.4%, 32.6%, 0%, 63.9%)
CIE-LABlab(24.78, -3.29, -22.14)
CIE-LCHlch(24.78, 22.38, 261.54°)
OKLaboklab(34.98% -0.0323 -0.0627)
OKLCHoklch(34.98% 0.071 242.7)
XYZxyz(3.9031, 4.3461, 10.7563)
Luminance0.0435 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123E5C #5C3012
analogous
#125C55 #123E5C #12195C
triadic
#123E5C #5C123E #3E5C12
tetradic
#123E5C #55125C #5C3012 #195C12
square
#123E5C #55125C #5C3012 #195C12
split-complementary
#123E5C #5C1219 #5C5512
monochromatic
#05111A #081C29 #123E5C #1C608F #2683C2

Accessibility & contrast

On white

11.23
#123E5C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.87
#123E5C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E5C
11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123E5C#FFFFFF#000000##FFFFFF
##123E5C1.0011.231.8711.23
#FFFFFF11.231.0021.001.00
#0000001.8721.001.0021.00
##FFFFFF11.231.0021.001.00

Color blindness preview

Protanopia (red-blind)
#303F5D
Deuteranopia (green-blind)
#26385B
Tritanopia (blue-blind)
#004549
Achromatopsia (no color)
#3B3B3B

Design tokens & code

CSS
--color: #123e5c;
/* rgb */ color: rgb(18, 62, 92);
/* oklch */ color: oklch(35.0% 0.071 242.7);
Tailwind
colors: {
  custom: {
    50: '#5c738a',
    500: '#123e5c',
    950: '#000000',
  },
}
SCSS
$custom: #123e5c;
$custom-light: #5c738a;
$custom-dark: #000000;
JSON
{
  "hex": "#123e5c",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 92
  },
  "hsl": {
    "h": 204.324,
    "s": 67.273,
    "l": 21.569
  },
  "oklch": {
    "l": 0.34976,
    "c": 0.07052,
    "h": 242.7
  },
  "luminance": 0.04347
}

Semantic roles & 50–950 ramp

primary
#123E5C
secondary
#945C35
accent
#843EEA
background
#F5F6F8
surface
#E9ECF0
border
#C5C7CB
text
#05080B
muted
#797B7C

Preview Lab

Preview with #123E5C

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

Preview Lab → · Contrast checker → · Palette generator →

#123E5C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva