#557DE9#557DE9

#557DE9 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.5% C 0.169 H 266.3°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#557DE9
RGB	rgb(85, 125, 233)
HSL	hsl(224, 77%, 62%)
HSV	hsv(224, 64%, 91%)
CMYK	cmyk(63.5%, 46.4%, 0%, 8.6%)
CIE-LAB	lab(54.53, 19.65, -58.91)
CIE-LCH	lch(54.53, 62.10, 288.45°)
OKLab	oklab(61.5% -0.011 -0.1685)
OKLCH	oklch(61.5% 0.169 266.3)
XYZ	xyz(25.7828, 22.4794, 80.0552)
Luminance	0.2248 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DE9 #E9C155

analogous

#55C7E9 #557DE9 #7755E9

triadic

#557DE9 #E9557D #7DE955

tetradic

#557DE9 #E955C7 #E9C155 #55E977

square

#557DE9 #E955C7 #E9C155 #55E977

split-complementary

#557DE9 #E97755 #C7E955

monochromatic

#163FAD #1F54E2 #557DE9 #8BA6F0 #C1D0F7

Accessibility & contrast

On white

3.82

#557DE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#557DE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DE9

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DE9	#FFFFFF	#000000	##000000
##557DE9	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#478AED

Deuteranopia (green-blind)

#2B7CE7

Tritanopia (blue-blind)

#0096A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557de9;
/* rgb */ color: rgb(85, 125, 233);
/* oklch */ color: oklch(61.5% 0.169 266.3);

Tailwind

colors: {
  custom: {
    50: '#92a2f1',
    500: '#557de9',
    950: '#000000',
  },
}

SCSS

$custom: #557de9;
$custom-light: #92a2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#557de9",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 233
  },
  "hsl": {
    "h": 223.784,
    "s": 77.083,
    "l": 62.353
  },
  "oklch": {
    "l": 0.61497,
    "c": 0.16884,
    "h": 266.3
  },
  "luminance": 0.22482
}

Semantic roles & 50–950 ramp

primary

#557DE9

secondary

#E8D9B2

accent

#A20CD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #557DE9

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

Preview Lab → · Contrast checker → · Palette generator →