#123B59#123B59

#123B59 is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.069 H 244.3°. Best body text is #FFFFFF at 11.70:1 contrast (WCAG AA passes).

Color values

HEX#123B59
RGBrgb(18, 59, 89)
HSLhsl(205, 66%, 21%)
HSVhsv(205, 80%, 35%)
CMYKcmyk(79.8%, 33.7%, 0%, 65.1%)
CIE-LABlab(23.60, -2.51, -22.04)
CIE-LCHlch(23.60, 22.19, 263.50°)
OKLaboklab(33.98% -0.0301 -0.0625)
OKLCHoklch(33.98% 0.069 244.3)
XYZxyz(3.6159, 3.9774, 10.0264)
Luminance0.0398 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123B59 #593012
analogous
#125953 #123B59 #121759
triadic
#123B59 #59123B #3B5912
tetradic
#123B59 #531259 #593012 #175912
square
#123B59 #531259 #593012 #175912
split-complementary
#123B59 #591217 #595312
monochromatic
#051119 #081926 #123B59 #1C5D8C #277EBF

Accessibility & contrast

On white

11.70
#123B59 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.80
#123B59 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123B59
11.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123B59#FFFFFF#000000##FFFFFF
##123B591.0011.701.8011.70
#FFFFFF11.701.0021.001.00
#0000001.8021.001.0021.00
##FFFFFF11.701.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2D3C5A
Deuteranopia (green-blind)
#233558
Tritanopia (blue-blind)
#004246
Achromatopsia (no color)
#383838

Design tokens & code

CSS
--color: #123b59;
/* rgb */ color: rgb(18, 59, 89);
/* oklch */ color: oklch(34.0% 0.069 244.3);
Tailwind
colors: {
  custom: {
    50: '#5b7088',
    500: '#123b59',
    950: '#000000',
  },
}
SCSS
$custom: #123b59;
$custom-light: #5b7088;
$custom-dark: #000000;
JSON
{
  "hex": "#123b59",
  "rgb": {
    "r": 18,
    "g": 59,
    "b": 89
  },
  "hsl": {
    "h": 205.352,
    "s": 66.355,
    "l": 20.98
  },
  "oklch": {
    "l": 0.33984,
    "c": 0.06932,
    "h": 244.3
  },
  "luminance": 0.03978
}

Semantic roles & 50–950 ramp

primary
#123B59
secondary
#925C35
accent
#873FE9
background
#F5F6F8
surface
#E9ECEF
border
#C5C7CA
text
#04070B
muted
#797A7C

Preview Lab

Preview with #123B59

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

Preview Lab → · Contrast checker → · Palette generator →

#123B59 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva