#1C558A#1C558A

#1C558A is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 44.1% C 0.105 H 250.3°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#1C558A
RGB	rgb(28, 85, 138)
HSL	hsl(209, 66%, 33%)
HSV	hsv(209, 80%, 54%)
CMYK	cmyk(79.7%, 38.4%, 0%, 45.9%)
CIE-LAB	lab(35.16, 1.43, -34.68)
CIE-LCH	lch(35.16, 34.71, 272.37°)
OKLab	oklab(44.07% -0.0355 -0.0989)
OKLCH	oklch(44.07% 0.105 250.3)
XYZ	xyz(8.3131, 8.5779, 25.2574)
Luminance	0.0858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C558A #8A511C

analogous

#1C8A88 #1C558A #1C1E8A

triadic

#1C558A #8A1C55 #558A1C

tetradic

#1C558A #881C8A #8A511C #1E8A1C

square

#1C558A #881C8A #8A511C #1E8A1C

split-complementary

#1C558A #8A1C1E #8A881C

monochromatic

#071624 #123657 #1C558A #2674BD #4793DA

Accessibility & contrast

On white

7.73

#1C558A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1C558A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C558A

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C558A	#FFFFFF	#000000	##FFFFFF
##1C558A	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C588C

Deuteranopia (green-blind)

#2B4E89

Tritanopia (blue-blind)

#006269

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1c558a;
/* rgb */ color: rgb(28, 85, 138);
/* oklch */ color: oklch(44.1% 0.105 250.3);

Tailwind

colors: {
  custom: {
    50: '#6a84ac',
    500: '#1c558a',
    950: '#000000',
  },
}

SCSS

$custom: #1c558a;
$custom-light: #6a84ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1c558a",
  "rgb": {
    "r": 28,
    "g": 85,
    "b": 138
  },
  "hsl": {
    "h": 208.909,
    "s": 66.265,
    "l": 32.549
  },
  "oklch": {
    "l": 0.44071,
    "c": 0.10504,
    "h": 250.3
  },
  "luminance": 0.08579
}

Semantic roles & 50–950 ramp

primary

#1C558A

secondary

#BB7F46

accent

#913FE9

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1C558A

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

Preview Lab → · Contrast checker → · Palette generator →