#123B63#123B63

#123B63 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.083 H 251.1°. Best body text is #FFFFFF at 11.47:1 contrast (WCAG AA passes).

Color values

HEX#123B63
RGBrgb(18, 59, 99)
HSLhsl(210, 69%, 23%)
HSVhsv(210, 82%, 39%)
CMYKcmyk(81.8%, 40.4%, 0%, 61.2%)
CIE-LABlab(24.18, 1.65, -27.64)
CIE-LCHlch(24.18, 27.68, 273.41°)
OKLaboklab(34.64% -0.0269 -0.0788)
OKLCHoklch(34.64% 0.083 251.1)
XYZxyz(4.0647, 4.1569, 12.3901)
Luminance0.0416 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123B63 #633A12
analogous
#126362 #123B63 #121263
triadic
#123B63 #63123B #3B6312
tetradic
#123B63 #621263 #633A12 #126312
square
#123B63 #621263 #633A12 #126312
split-complementary
#123B63 #631212 #636212
monochromatic
#050F1A #091C2F #123B63 #1B5A97 #2579CB

Accessibility & contrast

On white

11.47
#123B63 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.83
#123B63 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B63
11.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123B63#FFFFFF#000000##FFFFFF
##123B631.0011.471.8311.47
#FFFFFF11.471.0021.001.00
#0000001.8321.001.0021.00
##FFFFFF11.471.0021.001.00

Color blindness preview

Protanopia (red-blind)
#283E65
Deuteranopia (green-blind)
#1C3662
Tritanopia (blue-blind)
#00444A
Achromatopsia (no color)
#393939

Design tokens & code

CSS
--color: #123b63;
/* rgb */ color: rgb(18, 59, 99);
/* oklch */ color: oklch(34.6% 0.083 251.1);
Tailwind
colors: {
  custom: {
    50: '#5e708f',
    500: '#123b63',
    950: '#000000',
  },
}
SCSS
$custom: #123b63;
$custom-light: #5e708f;
$custom-dark: #000000;
JSON
{
  "hex": "#123b63",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 99
  },
  "hsl": {
    "h": 209.63,
    "s": 69.231,
    "l": 22.941
  },
  "oklch": {
    "l": 0.34637,
    "c": 0.08327,
    "h": 251.1
  },
  "luminance": 0.04157
}

Semantic roles & 50–950 ramp

primary
#123B63
secondary
#9B6836
accent
#933CEC
background
#F5F6F8
surface
#EAECF0
border
#C6C7CB
text
#05070C
muted
#797A7D

Preview Lab

Preview with #123B63

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

Preview Lab → · Contrast checker → · Palette generator →

#123B63 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva