#557FC8#557FC8

#557FC8 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 59.9% C 0.121 H 260.8°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#557FC8
RGB	rgb(85, 127, 200)
HSL	hsl(218, 51%, 56%)
HSV	hsv(218, 58%, 78%)
CMYK	cmyk(57.5%, 36.5%, 0%, 21.6%)
CIE-LAB	lab(53.25, 7.36, -42.34)
CIE-LCH	lch(53.25, 42.98, 279.86°)
OKLab	oklab(59.92% -0.0193 -0.1199)
OKLCH	oklch(59.92% 0.121 260.8)
XYZ	xyz(21.7574, 21.2784, 57.5930)
Luminance	0.2128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FC8 #C89E55

analogous

#55B8C8 #557FC8 #6455C8

triadic

#557FC8 #C8557F #7FC855

tetradic

#557FC8 #C855B8 #C89E55 #55C864

square

#557FC8 #C855B8 #C89E55 #55C864

split-complementary

#557FC8 #C86455 #B8C855

monochromatic

#28467B #3760A9 #557FC8 #83A2D7 #B1C5E6

Accessibility & contrast

On white

4.00

#557FC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#557FC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FC8

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FC8	#FFFFFF	#000000	##000000
##557FC8	1.00	4.00	5.26	5.26
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6185CB

Deuteranopia (green-blind)

#527AC6

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557fc8;
/* rgb */ color: rgb(85, 127, 200);
/* oklch */ color: oklch(59.9% 0.121 260.8);

Tailwind

colors: {
  custom: {
    50: '#8da3d9',
    500: '#557fc8',
    950: '#000000',
  },
}

SCSS

$custom: #557fc8;
$custom-light: #8da3d9;
$custom-dark: #000000;

JSON

{
  "hex": "#557fc8",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 200
  },
  "hsl": {
    "h": 218.087,
    "s": 51.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59919,
    "c": 0.12144,
    "h": 260.8
  },
  "luminance": 0.2128
}

Semantic roles & 50–950 ramp

primary

#557FC8

secondary

#D4C3A5

accent

#A74DDB

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F14

muted

#7E7F83

Preview Lab

Preview with #557FC8

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

Preview Lab → · Contrast checker → · Palette generator →