#557BC8#557BC8

#557BC8 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.126 H 263.2°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#557BC8
RGB	rgb(85, 123, 200)
HSL	hsl(220, 51%, 56%)
HSV	hsv(220, 58%, 78%)
CMYK	cmyk(57.5%, 38.5%, 0%, 21.6%)
CIE-LAB	lab(52.14, 9.78, -44.11)
CIE-LCH	lch(52.14, 45.18, 282.50°)
OKLab	oklab(59.05% -0.0149 -0.1251)
OKLCH	oklch(59.05% 0.126 263.2)
XYZ	xyz(21.2510, 20.2656, 57.4242)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BC8 #C8A255

analogous

#55B4C8 #557BC8 #6855C8

triadic

#557BC8 #C8557B #7BC855

tetradic

#557BC8 #C855B4 #C8A255 #55C868

square

#557BC8 #C855B4 #C8A255 #55C868

split-complementary

#557BC8 #C86855 #B4C855

monochromatic

#28437B #375DA9 #557BC8 #839FD7 #B1C3E6

Accessibility & contrast

On white

4.16

#557BC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#557BC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BC8

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BC8	#FFFFFF	#000000	##000000
##557BC8	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B82CB

Deuteranopia (green-blind)

#4C77C6

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557bc8;
/* rgb */ color: rgb(85, 123, 200);
/* oklch */ color: oklch(59.1% 0.126 263.2);

Tailwind

colors: {
  custom: {
    50: '#8da0d9',
    500: '#557bc8',
    950: '#000000',
  },
}

SCSS

$custom: #557bc8;
$custom-light: #8da0d9;
$custom-dark: #000000;

JSON

{
  "hex": "#557bc8",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 200
  },
  "hsl": {
    "h": 220.174,
    "s": 51.111,
    "l": 55.882
  },
  "oklch": {
    "l": 0.59054,
    "c": 0.12598,
    "h": 263.2
  },
  "luminance": 0.20267
}

Semantic roles & 50–950 ramp

primary

#557BC8

secondary

#D4C4A5

accent

#AC4DDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #557BC8

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

Preview Lab → · Contrast checker → · Palette generator →