#557CD3#557CD3

#557CD3 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.9% C 0.140 H 264.4°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#557CD3
RGB	rgb(85, 124, 211)
HSL	hsl(221, 59%, 58%)
HSV	hsv(221, 60%, 83%)
CMYK	cmyk(59.7%, 41.2%, 0%, 17.3%)
CIE-LAB	lab(53.00, 12.83, -48.98)
CIE-LCH	lch(53.00, 50.64, 284.68°)
OKLab	oklab(59.91% -0.0137 -0.1393)
OKLCH	oklch(59.91% 0.14 264.4)
XYZ	xyz(22.7078, 21.0478, 64.4814)
Luminance	0.2105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CD3 #D3AC55

analogous

#55BBD3 #557CD3 #6D55D3

triadic

#557CD3 #D3557C #7CD355

tetradic

#557CD3 #D355BB #D3AC55 #55D36D

square

#557CD3 #D355BB #D3AC55 #55D36D

split-complementary

#557CD3 #D36D55 #BBD355

monochromatic

#24438A #305BBB #557CD3 #86A1E0 #B6C7EC

Accessibility & contrast

On white

4.03

#557CD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#557CD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CD3

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CD3	#FFFFFF	#000000	##000000
##557CD3	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5685D6

Deuteranopia (green-blind)

#4479D1

Tritanopia (blue-blind)

#008F9D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557cd3;
/* rgb */ color: rgb(85, 124, 211);
/* oklch */ color: oklch(59.9% 0.140 264.4);

Tailwind

colors: {
  custom: {
    50: '#8fa1e1',
    500: '#557cd3',
    950: '#000000',
  },
}

SCSS

$custom: #557cd3;
$custom-light: #8fa1e1;
$custom-dark: #000000;

JSON

{
  "hex": "#557cd3",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 211
  },
  "hsl": {
    "h": 221.429,
    "s": 58.879,
    "l": 58.039
  },
  "oklch": {
    "l": 0.59914,
    "c": 0.14002,
    "h": 264.4
  },
  "luminance": 0.2105
}

Semantic roles & 50–950 ramp

primary

#557CD3

secondary

#DBCBA9

accent

#B246E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557CD3

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

Preview Lab → · Contrast checker → · Palette generator →