#123E73#123E73

#123E73 is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.5% C 0.103 H 255.5°. Best body text is #FFFFFF at 10.70:1 contrast (WCAG AA passes).

Color values

HEX#123E73
RGBrgb(18, 62, 115)
HSLhsl(213, 73%, 26%)
HSVhsv(213, 84%, 45%)
CMYKcmyk(84.3%, 46.1%, 0%, 54.9%)
CIE-LABlab(26.19, 6.31, -34.70)
CIE-LCHlch(26.19, 35.26, 280.31°)
OKLaboklab(36.53% -0.0257 -0.0995)
OKLCHoklch(36.53% 0.103 255.5)
XYZxyz(5.0654, 4.8110, 16.8780)
Luminance0.0481 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#123E73 #734712
analogous
#126E73 #123E73 #171273
triadic
#123E73 #73123E #3E7312
tetradic
#123E73 #73126E #734712 #127317
square
#123E73 #73126E #734712 #127317
split-complementary
#123E73 #731712 #6E7312
monochromatic
#040E1A #0A213E #123E73 #1A5BA8 #2377DD

Accessibility & contrast

On white

10.70
#123E73 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.96
#123E73 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123E73
10.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##123E73#FFFFFF#000000##FFFFFF
##123E731.0010.701.9610.70
#FFFFFF10.701.0021.001.00
#0000001.9621.001.0021.00
##FFFFFF10.701.0021.001.00

Color blindness preview

Protanopia (red-blind)
#234375
Deuteranopia (green-blind)
#0F3A72
Tritanopia (blue-blind)
#004B52
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #123e73;
/* rgb */ color: rgb(18, 62, 115);
/* oklch */ color: oklch(36.5% 0.103 255.5);
Tailwind
colors: {
  custom: {
    50: '#62729c',
    500: '#123e73',
    950: '#000000',
  },
}
SCSS
$custom: #123e73;
$custom-light: #62729c;
$custom-dark: #000000;
JSON
{
  "hex": "#123e73",
  "rgb": {
    "r": 18,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 212.784,
    "s": 72.932,
    "l": 26.078
  },
  "oklch": {
    "l": 0.36534,
    "c": 0.10276,
    "h": 255.5
  },
  "luminance": 0.04812
}

Semantic roles & 50–950 ramp

primary
#123E73
secondary
#AA7637
accent
#9C38F0
background
#F6F6F9
surface
#EBECF2
border
#C6C7CC
text
#06080E
muted
#7A7B7E

Preview Lab

Preview with #123E73

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

Preview Lab → · Contrast checker → · Palette generator →

#123E73 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva