#123D58#123D58

#123D58 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.5% C 0.066 H 240.5°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#123D58
RGB	rgb(18, 61, 88)
HSL	hsl(203, 66%, 21%)
HSV	hsv(203, 80%, 35%)
CMYK	cmyk(79.5%, 30.7%, 0%, 65.5%)
CIE-LAB	lab(24.23, -4.25, -20.40)
CIE-LCH	lch(24.23, 20.84, 258.22°)
OKLab	oklab(34.46% -0.0326 -0.0576)
OKLCH	oklch(34.46% 0.066 240.5)
XYZ	xyz(3.6790, 4.1702, 9.8417)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#123D58 #582D12

analogous

#125850 #123D58 #121A58

triadic

#123D58 #58123D #3D5812

tetradic

#123D58 #501258 #582D12 #1A5812

square

#123D58 #501258 #582D12 #1A5812

split-complementary

#123D58 #58121A #585012

monochromatic

#051219 #081A25 #123D58 #1C608B #2783BE

Accessibility & contrast

On white

11.45

#123D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#123D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #123D58

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##123D58	#FFFFFF	#000000	##FFFFFF
##123D58	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303D59

Deuteranopia (green-blind)

#273758

Tritanopia (blue-blind)

#004446

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #123d58;
/* rgb */ color: rgb(18, 61, 88);
/* oklch */ color: oklch(34.5% 0.066 240.5);

Tailwind

colors: {
  custom: {
    50: '#5b7287',
    500: '#123d58',
    950: '#000000',
  },
}

SCSS

$custom: #123d58;
$custom-light: #5b7287;
$custom-dark: #000000;

JSON

{
  "hex": "#123d58",
  "rgb": {
    "r": 18,
    "g": 61,
    "b": 88
  },
  "hsl": {
    "h": 203.143,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.34464,
    "c": 0.06625,
    "h": 240.5
  },
  "luminance": 0.04171
}

Semantic roles & 50–950 ramp

primary

#123D58

secondary

#915835

accent

#803FE9

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#04070B

muted

#797A7C

Preview Lab

Preview with #123D58

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

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