#557CD1#557CD1

#557CD1 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.137 H 264.1°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#557CD1
RGB	rgb(85, 124, 209)
HSL	hsl(221, 57%, 58%)
HSV	hsv(221, 59%, 82%)
CMYK	cmyk(59.3%, 40.7%, 0%, 18%)
CIE-LAB	lab(52.89, 12.16, -48.03)
CIE-LCH	lch(52.89, 49.54, 284.21°)
OKLab	oklab(59.8% -0.0141 -0.1365)
OKLCH	oklch(59.8% 0.137 264.1)
XYZ	xyz(22.4586, 20.9482, 63.1691)
Luminance	0.2095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CD1 #D1AA55

analogous

#55BAD1 #557CD1 #6C55D1

triadic

#557CD1 #D1557C #7CD155

tetradic

#557CD1 #D155BA #D1AA55 #55D16C

square

#557CD1 #D155BA #D1AA55 #55D16C

split-complementary

#557CD1 #D16C55 #BAD155

monochromatic

#254487 #325CB7 #557CD1 #85A1DE #B5C6EB

Accessibility & contrast

On white

4.05

#557CD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#557CD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CD1

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CD1	#FFFFFF	#000000	##000000
##557CD1	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5784D4

Deuteranopia (green-blind)

#4679CF

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557cd1;
/* rgb */ color: rgb(85, 124, 209);
/* oklch */ color: oklch(59.8% 0.137 264.1);

Tailwind

colors: {
  custom: {
    50: '#8fa1df',
    500: '#557cd1',
    950: '#000000',
  },
}

SCSS

$custom: #557cd1;
$custom-light: #8fa1df;
$custom-dark: #000000;

JSON

{
  "hex": "#557cd1",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 209
  },
  "hsl": {
    "h": 221.129,
    "s": 57.407,
    "l": 57.647
  },
  "oklch": {
    "l": 0.59795,
    "c": 0.13727,
    "h": 264.1
  },
  "luminance": 0.2095
}

Semantic roles & 50–950 ramp

primary

#557CD1

secondary

#DACAA8

accent

#B047E1

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557CD1

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

Preview Lab → · Contrast checker → · Palette generator →