#123C59#123C59

#123C59 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.3% C 0.068 H 242.9°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX#123C59
RGBrgb(18, 60, 89)
HSLhsl(205, 66%, 21%)
HSVhsv(205, 80%, 35%)
CMYKcmyk(79.8%, 32.6%, 0%, 65.1%)
CIE-LABlab(23.94, -3.18, -21.51)
CIE-LCHlch(23.94, 21.74, 261.58°)
OKLaboklab(34.25% -0.0312 -0.0609)
OKLCHoklch(34.25% 0.068 242.9)
XYZxyz(3.6678, 4.0812, 10.0437)
Luminance0.0408 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123C59 #592F12
analogous
#125952 #123C59 #121859
triadic
#123C59 #59123C #3C5912
tetradic
#123C59 #521259 #592F12 #185912
square
#123C59 #521259 #592F12 #185912
split-complementary
#123C59 #591218 #595212
monochromatic
#051119 #081A26 #123C59 #1C5E8C #2781BF

Accessibility & contrast

On white

11.56
#123C59 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.82
#123C59 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C59
11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123C59#FFFFFF#000000##FFFFFF
##123C591.0011.561.8211.56
#FFFFFF11.561.0021.001.00
#0000001.8221.001.0021.00
##FFFFFF11.561.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2F3D5A
Deuteranopia (green-blind)
#253658
Tritanopia (blue-blind)
#004346
Achromatopsia (no color)
#393939

Design tokens & code

CSS
--color: #123c59;
/* rgb */ color: rgb(18, 60, 89);
/* oklch */ color: oklch(34.3% 0.068 242.9);
Tailwind
colors: {
  custom: {
    50: '#5b7188',
    500: '#123c59',
    950: '#000000',
  },
}
SCSS
$custom: #123c59;
$custom-light: #5b7188;
$custom-dark: #000000;
JSON
{
  "hex": "#123c59",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 89
  },
  "hsl": {
    "h": 204.507,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.34253,
    "c": 0.0684,
    "h": 242.9
  },
  "luminance": 0.04082
}

Semantic roles & 50–950 ramp

primary
#123C59
secondary
#925B35
accent
#843FE9
background
#F5F6F8
surface
#E9ECEF
border
#C5C7CA
text
#04070B
muted
#797A7C

Preview Lab

Preview with #123C59

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

Preview Lab → · Contrast checker → · Palette generator →

#123C59 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva