#123F56#123F56

#123F56 is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 34.9% C 0.062 H 235.1°. Best body text is #FFFFFF at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#123F56
RGB	rgb(18, 63, 86)
HSL	hsl(200, 65%, 20%)
HSV	hsv(200, 79%, 34%)
CMYK	cmyk(79.1%, 26.7%, 0%, 66.3%)
CIE-LAB	lab(24.81, -6.37, -18.18)
CIE-LCH	lch(24.81, 19.26, 250.69°)
OKLab	oklab(34.89% -0.0357 -0.0512)
OKLCH	oklch(34.89% 0.062 235.1)
XYZ	xyz(3.7060, 4.3551, 9.4476)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F56 #562912

analogous

#12564B #123F56 #121D56

triadic

#123F56 #56123F #3F5612

tetradic

#123F56 #4B1256 #562912 #1D5612

square

#123F56 #4B1256 #562912 #1D5612

split-complementary

#123F56 #56121D #564B12

monochromatic

#051319 #071A23 #123F56 #1D6489 #2789BB

Accessibility & contrast

On white

11.22

#123F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#123F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F56

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F56	#FFFFFF	#000000	##FFFFFF
##123F56	1.00	11.22	1.87	11.22
#FFFFFF	11.22	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343F57

Deuteranopia (green-blind)

#2B3856

Tritanopia (blue-blind)

#004547

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #123f56;
/* rgb */ color: rgb(18, 63, 86);
/* oklch */ color: oklch(34.9% 0.062 235.1);

Tailwind

colors: {
  custom: {
    50: '#5b7485',
    500: '#123f56',
    950: '#000000',
  },
}

SCSS

$custom: #123f56;
$custom-light: #5b7485;
$custom-dark: #000000;

JSON

{
  "hex": "#123f56",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 86
  },
  "hsl": {
    "h": 200.294,
    "s": 65.385,
    "l": 20.392
  },
  "oklch": {
    "l": 0.34895,
    "c": 0.06238,
    "h": 235.1
  },
  "luminance": 0.04355
}

Semantic roles & 50–950 ramp

primary

#123F56

secondary

#8F5335

accent

#793FE8

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #123F56

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

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