#577BE8#577BE8

#577BE8 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.169 H 267.5°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#577BE8
RGB	rgb(87, 123, 232)
HSL	hsl(225, 76%, 63%)
HSV	hsv(225, 63%, 91%)
CMYK	cmyk(62.5%, 47%, 0%, 9%)
CIE-LAB	lab(54.04, 20.88, -59.12)
CIE-LCH	lch(54.04, 62.70, 289.45°)
OKLab	oklab(61.13% -0.0074 -0.1691)
OKLCH	oklch(61.13% 0.169 267.5)
XYZ	xyz(25.5739, 22.0161, 79.2301)
Luminance	0.2202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BE8 #E8C457

analogous

#57C4E8 #577BE8 #7B57E8

triadic

#577BE8 #E8577B #7BE857

tetradic

#577BE8 #E857C4 #E8C457 #57E87B

square

#577BE8 #E857C4 #E8C457 #57E87B

split-complementary

#577BE8 #E87B57 #C4E857

monochromatic

#183DAD #2151E1 #577BE8 #8DA5EF #C3D0F7

Accessibility & contrast

On white

3.89

#577BE8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#577BE8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BE8

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BE8	#FFFFFF	#000000	##000000
##577BE8	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4488EC

Deuteranopia (green-blind)

#287BE6

Tritanopia (blue-blind)

#0094A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577be8;
/* rgb */ color: rgb(87, 123, 232);
/* oklch */ color: oklch(61.1% 0.169 267.5);

Tailwind

colors: {
  custom: {
    50: '#93a0f0',
    500: '#577be8',
    950: '#000000',
  },
}

SCSS

$custom: #577be8;
$custom-light: #93a0f0;
$custom-dark: #000000;

JSON

{
  "hex": "#577be8",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 232
  },
  "hsl": {
    "h": 225.103,
    "s": 75.916,
    "l": 62.549
  },
  "oklch": {
    "l": 0.61132,
    "c": 0.16927,
    "h": 267.5
  },
  "luminance": 0.22018
}

Semantic roles & 50–950 ramp

primary

#577BE8

secondary

#E8DBB3

accent

#A60DD8

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577BE8

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

Preview Lab → · Contrast checker → · Palette generator →