#123F63#123F63

#123F63 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.079 H 246.9°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX#123F63
RGBrgb(18, 63, 99)
HSLhsl(207, 69%, 23%)
HSVhsv(207, 82%, 39%)
CMYKcmyk(81.8%, 36.4%, 0%, 61.2%)
CIE-LABlab(25.52, -1.08, -25.52)
CIE-LCHlch(25.52, 25.55, 267.57°)
OKLaboklab(35.68% -0.031 -0.0725)
OKLCHoklch(35.68% 0.079 246.9)
XYZxyz(4.2782, 4.5840, 12.4613)
Luminance0.0458 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123F63 #633612
analogous
#12635E #123F63 #121663
triadic
#123F63 #63123F #3F6312
tetradic
#123F63 #5E1263 #633612 #166312
square
#123F63 #5E1263 #633612 #166312
split-complementary
#123F63 #631216 #635E12
monochromatic
#05101A #091E2F #123F63 #1B6097 #2581CB

Accessibility & contrast

On white

10.96
#123F63 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.92
#123F63 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F63
10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123F63#FFFFFF#000000##FFFFFF
##123F631.0010.961.9210.96
#FFFFFF10.961.0021.001.00
#0000001.9221.001.0021.00
##FFFFFF10.961.0021.001.00

Color blindness preview

Protanopia (red-blind)
#2E4165
Deuteranopia (green-blind)
#233962
Tritanopia (blue-blind)
#00484C
Achromatopsia (no color)
#3C3C3C

Design tokens & code

CSS
--color: #123f63;
/* rgb */ color: rgb(18, 63, 99);
/* oklch */ color: oklch(35.7% 0.079 246.9);
Tailwind
colors: {
  custom: {
    50: '#5e738f',
    500: '#123f63',
    950: '#000000',
  },
}
SCSS
$custom: #123f63;
$custom-light: #5e738f;
$custom-dark: #000000;
JSON
{
  "hex": "#123f63",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 99
  },
  "hsl": {
    "h": 206.667,
    "s": 69.231,
    "l": 22.941
  },
  "oklch": {
    "l": 0.35682,
    "c": 0.0789,
    "h": 246.9
  },
  "luminance": 0.04584
}

Semantic roles & 50–950 ramp

primary
#123F63
secondary
#9B6336
accent
#8A3CEC
background
#F5F6F8
surface
#EAECF0
border
#C6C7CB
text
#05080C
muted
#797B7D

Preview Lab

Preview with #123F63

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

Preview Lab → · Contrast checker → · Palette generator →

#123F63 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva