#558CB3#558CB3

#558CB3 is a mid, moderate cyan. Relative luminance 0.239; OKLCH L 61.8% C 0.083 H 240.8°. Best body text is #000000 at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#558CB3
RGB	rgb(85, 140, 179)
HSL	hsl(205, 38%, 52%)
HSV	hsv(205, 53%, 70%)
CMYK	cmyk(52.5%, 21.8%, 0%, 29.8%)
CIE-LAB	lab(56.03, -6.96, -26.04)
CIE-LCH	lch(56.03, 26.95, 255.03°)
OKLab	oklab(61.78% -0.0406 -0.0726)
OKLCH	oklch(61.78% 0.083 240.8)
XYZ	xyz(21.2581, 23.9404, 46.1398)
Luminance	0.2394 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#558CB3 #B37C55

analogous

#55B3AB #558CB3 #555DB3

triadic

#558CB3 #B3558C #8CB355

tetradic

#558CB3 #AB55B3 #B37C55 #5DB355

square

#558CB3 #AB55B3 #B37C55 #5DB355

split-complementary

#558CB3 #B3555D #B3AB55

monochromatic

#2C4B62 #3F6C8C #558CB3 #7FA9C6 #AAC5D9

Accessibility & contrast

On white

3.63

#558CB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.79

#558CB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #558CB3

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##558CB3	#FFFFFF	#000000	##000000
##558CB3	1.00	3.63	5.79	5.79
#FFFFFF	3.63	1.00	21.00	21.00
#000000	5.79	21.00	1.00	1.00
##000000	5.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8CB5

Deuteranopia (green-blind)

#6E82B2

Tritanopia (blue-blind)

#1E9699

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #558cb3;
/* rgb */ color: rgb(85, 140, 179);
/* oklch */ color: oklch(61.8% 0.083 240.8);

Tailwind

colors: {
  custom: {
    50: '#8badca',
    500: '#558cb3',
    950: '#000000',
  },
}

SCSS

$custom: #558cb3;
$custom-light: #8badca;
$custom-dark: #000000;

JSON

{
  "hex": "#558cb3",
  "rgb": {
    "r": 85,
    "g": 140,
    "b": 179
  },
  "hsl": {
    "h": 204.894,
    "s": 38.211,
    "l": 51.765
  },
  "oklch": {
    "l": 0.61781,
    "c": 0.08318,
    "h": 240.8
  },
  "luminance": 0.23942
}

Semantic roles & 50–950 ramp

primary

#558CB3

secondary

#C7AE9D

accent

#8A5ACE

background

#F8FAFC

surface

#F0F4F8

border

#CBCED1

text

#0C1013

muted

#7D7F82

Preview Lab

Preview with #558CB3

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

Preview Lab → · Contrast checker → · Palette generator →