#557ED9#557ED9

#557ED9 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.7% C 0.146 H 264.2°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#557ED9
RGB	rgb(85, 126, 217)
HSL	hsl(221, 63%, 59%)
HSV	hsv(221, 61%, 85%)
CMYK	cmyk(60.8%, 41.9%, 0%, 14.9%)
CIE-LAB	lab(53.88, 13.63, -50.98)
CIE-LCH	lch(53.88, 52.77, 284.96°)
OKLab	oklab(60.7% -0.0146 -0.1452)
OKLCH	oklch(60.7% 0.146 264.2)
XYZ	xyz(23.7272, 21.8607, 68.6013)
Luminance	0.2186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ED9 #D9B055

analogous

#55C0D9 #557ED9 #6E55D9

triadic

#557ED9 #D9557E #7ED955

tetradic

#557ED9 #D955C0 #D9B055 #55D96E

square

#557ED9 #D955C0 #D9B055 #55D96E

split-complementary

#557ED9 #D96E55 #C0D955

monochromatic

#214493 #2C5BC5 #557ED9 #87A4E4 #B9CAEF

Accessibility & contrast

On white

3.91

#557ED9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#557ED9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ED9

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ED9	#FFFFFF	#000000	##000000
##557ED9	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5587DD

Deuteranopia (green-blind)

#427BD7

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557ed9;
/* rgb */ color: rgb(85, 126, 217);
/* oklch */ color: oklch(60.7% 0.146 264.2);

Tailwind

colors: {
  custom: {
    50: '#90a2e5',
    500: '#557ed9',
    950: '#000000',
  },
}

SCSS

$custom: #557ed9;
$custom-light: #90a2e5;
$custom-dark: #000000;

JSON

{
  "hex": "#557ed9",
  "rgb": {
    "r": 85,
    "g": 126,
    "b": 217
  },
  "hsl": {
    "h": 221.364,
    "s": 63.462,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60698,
    "c": 0.14591,
    "h": 264.2
  },
  "luminance": 0.21863
}

Semantic roles & 50–950 ramp

primary

#557ED9

secondary

#DFCFAB

accent

#B341E6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #557ED9

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

Preview Lab → · Contrast checker → · Palette generator →