#123C58#123C58

#123C58 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.2% C 0.067 H 242.0°. Best body text is #FFFFFF at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#123C58
RGB	rgb(18, 60, 88)
HSL	hsl(204, 66%, 21%)
HSV	hsv(204, 80%, 35%)
CMYK	cmyk(79.5%, 31.8%, 0%, 65.5%)
CIE-LAB	lab(23.88, -3.59, -20.94)
CIE-LCH	lch(23.88, 21.24, 260.27°)
OKLab	oklab(34.19% -0.0315 -0.0592)
OKLCH	oklch(34.19% 0.067 242)
XYZ	xyz(3.6261, 4.0645, 9.8240)
Luminance	0.0406 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123C58 #582E12

analogous

#125851 #123C58 #121958

triadic

#123C58 #58123C #3C5812

tetradic

#123C58 #511258 #582E12 #195812

square

#123C58 #511258 #582E12 #195812

split-complementary

#123C58 #581219 #585112

monochromatic

#051119 #081925 #123C58 #1C5F8B #2781BE

Accessibility & contrast

On white

11.58

#123C58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#123C58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123C58

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123C58	#FFFFFF	#000000	##FFFFFF
##123C58	1.00	11.58	1.81	11.58
#FFFFFF	11.58	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3C59

Deuteranopia (green-blind)

#253657

Tritanopia (blue-blind)

#004346

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #123c58;
/* rgb */ color: rgb(18, 60, 88);
/* oklch */ color: oklch(34.2% 0.067 242.0);

Tailwind

colors: {
  custom: {
    50: '#5b7187',
    500: '#123c58',
    950: '#000000',
  },
}

SCSS

$custom: #123c58;
$custom-light: #5b7187;
$custom-dark: #000000;

JSON

{
  "hex": "#123c58",
  "rgb": {
    "r": 18,
    "g": 60,
    "b": 88
  },
  "hsl": {
    "h": 204,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34192,
    "c": 0.06709,
    "h": 242
  },
  "luminance": 0.04065
}

Semantic roles & 50–950 ramp

primary

#123C58

secondary

#915A35

accent

#833FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123C58

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

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