#557BD9#557BD9

#557BD9 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.149 H 265.6°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#557BD9
RGB	rgb(85, 123, 217)
HSL	hsl(223, 63%, 59%)
HSV	hsv(223, 61%, 85%)
CMYK	cmyk(60.8%, 43.3%, 0%, 14.9%)
CIE-LAB	lab(53.06, 15.46, -52.28)
CIE-LCH	lch(53.06, 54.51, 286.47°)
OKLab	oklab(60.07% -0.0116 -0.149)
OKLCH	oklch(60.07% 0.149 265.6)
XYZ	xyz(23.3494, 21.1049, 68.4754)
Luminance	0.2111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BD9 #D9B355

analogous

#55BDD9 #557BD9 #7155D9

triadic

#557BD9 #D9557B #7BD955

tetradic

#557BD9 #D955BD #D9B355 #55D971

square

#557BD9 #D955BD #D9B355 #55D971

split-complementary

#557BD9 #D97155 #BDD955

monochromatic

#214293 #2C58C5 #557BD9 #87A2E4 #B9C9EF

Accessibility & contrast

On white

4.02

#557BD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#557BD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD9

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BD9	#FFFFFF	#000000	##000000
##557BD9	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5085DD

Deuteranopia (green-blind)

#3C79D7

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557bd9;
/* rgb */ color: rgb(85, 123, 217);
/* oklch */ color: oklch(60.1% 0.149 265.6);

Tailwind

colors: {
  custom: {
    50: '#90a0e5',
    500: '#557bd9',
    950: '#000000',
  },
}

SCSS

$custom: #557bd9;
$custom-light: #90a0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#557bd9",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 217
  },
  "hsl": {
    "h": 222.727,
    "s": 63.462,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60071,
    "c": 0.14947,
    "h": 265.6
  },
  "luminance": 0.21107
}

Semantic roles & 50–950 ramp

primary

#557BD9

secondary

#DFD0AB

accent

#B741E6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BD9

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

Preview Lab → · Contrast checker → · Palette generator →