#123F4D#123F4D

#123F4D is a dark, muted cyan. Relative luminance 0.042; OKLCH L 34.4% C 0.054 H 222.4°. Best body text is #FFFFFF at 11.39:1 contrast (WCAG AA passes).

Color values

HEX#123F4D
RGBrgb(18, 63, 77)
HSLhsl(194, 62%, 19%)
HSVhsv(194, 77%, 30%)
CMYKcmyk(76.6%, 18.2%, 0%, 69.8%)
CIE-LABlab(24.38, -9.87, -12.93)
CIE-LCHlch(24.38, 16.26, 232.64°)
OKLaboklab(34.41% -0.0395 -0.0361)
OKLCHoklch(34.41% 0.054 222.4)
XYZxyz(3.3660, 4.2191, 7.6567)
Luminance0.0422 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123F4D #4D2012
analogous
#124D3D #123F4D #12214D
triadic
#123F4D #4D123F #3F4D12
tetradic
#123F4D #3D124D #4D2012 #214D12
square
#123F4D #3D124D #4D2012 #214D12
split-complementary
#123F4D #4D1221 #4D3D12
monochromatic
#061419 #06161B #123F4D #1E687F #2990B0

Accessibility & contrast

On white

11.39
#123F4D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.84
#123F4D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F4D
11.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123F4D#FFFFFF#000000##FFFFFF
##123F4D1.0011.391.8411.39
#FFFFFF11.391.0021.001.00
#0000001.8421.001.0021.00
##FFFFFF11.391.0021.001.00

Color blindness preview

Protanopia (red-blind)
#373D4E
Deuteranopia (green-blind)
#2F374D
Tritanopia (blue-blind)
#004343
Achromatopsia (no color)
#3A3A3A

Design tokens & code

CSS
--color: #123f4d;
/* rgb */ color: rgb(18, 63, 77);
/* oklch */ color: oklch(34.4% 0.054 222.4);
Tailwind
colors: {
  custom: {
    50: '#59747e',
    500: '#123f4d',
    950: '#000000',
  },
}
SCSS
$custom: #123f4d;
$custom-light: #59747e;
$custom-dark: #000000;
JSON
{
  "hex": "#123f4d",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 77
  },
  "hsl": {
    "h": 194.237,
    "s": 62.105,
    "l": 18.627
  },
  "oklch": {
    "l": 0.3441,
    "c": 0.05351,
    "h": 222.4
  },
  "luminance": 0.04219
}

Semantic roles & 50–950 ramp

primary
#123F4D
secondary
#864835
accent
#6943E5
background
#F5F7F7
surface
#E9EDEE
border
#C5C8C9
text
#04080A
muted
#797B7C

Preview Lab

Preview with #123F4D

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

Preview Lab → · Contrast checker → · Palette generator →

#123F4D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva