#123F55#123F55

#123F55 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.8% C 0.061 H 233.9°. Best body text is #FFFFFF at 11.24:1 contrast (WCAG AA passes).

Color values

HEX	#123F55
RGB	rgb(18, 63, 85)
HSL	hsl(200, 65%, 20%)
HSV	hsv(200, 79%, 33%)
CMYK	cmyk(78.8%, 25.9%, 0%, 66.7%)
CIE-LAB	lab(24.76, -6.76, -17.60)
CIE-LCH	lch(24.76, 18.85, 248.98°)
OKLab	oklab(34.84% -0.0361 -0.0495)
OKLCH	oklch(34.84% 0.061 233.9)
XYZ	xyz(3.6660, 4.3391, 9.2369)
Luminance	0.0434 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123F55 #552812

analogous

#125549 #123F55 #121E55

triadic

#123F55 #55123F #3F5512

tetradic

#123F55 #491255 #552812 #1E5512

square

#123F55 #491255 #552812 #1E5512

split-complementary

#123F55 #55121E #554912

monochromatic

#051319 #071A22 #123F55 #1D6488 #278ABA

Accessibility & contrast

On white

11.24

#123F55 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#123F55 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123F55

11.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123F55	#FFFFFF	#000000	##FFFFFF
##123F55	1.00	11.24	1.87	11.24
#FFFFFF	11.24	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343E56

Deuteranopia (green-blind)

#2B3855

Tritanopia (blue-blind)

#004546

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #123f55;
/* rgb */ color: rgb(18, 63, 85);
/* oklch */ color: oklch(34.8% 0.061 233.9);

Tailwind

colors: {
  custom: {
    50: '#5b7485',
    500: '#123f55',
    950: '#000000',
  },
}

SCSS

$custom: #123f55;
$custom-light: #5b7485;
$custom-dark: #000000;

JSON

{
  "hex": "#123f55",
  "rgb": {
    "r": 18,
    "g": 63,
    "b": 85
  },
  "hsl": {
    "h": 199.701,
    "s": 65.049,
    "l": 20.196
  },
  "oklch": {
    "l": 0.34839,
    "c": 0.06126,
    "h": 233.9
  },
  "luminance": 0.04339
}

Semantic roles & 50–950 ramp

primary

#123F55

secondary

#8E5235

accent

#7740E8

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #123F55

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

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