#577CD7#577CD7

#577CD7 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.3% C 0.145 H 265.6°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#577CD7
RGB	rgb(87, 124, 215)
HSL	hsl(223, 62%, 59%)
HSV	hsv(223, 60%, 84%)
CMYK	cmyk(59.5%, 42.3%, 0%, 15.7%)
CIE-LAB	lab(53.33, 14.55, -50.72)
CIE-LCH	lch(53.33, 52.77, 286.01°)
OKLab	oklab(60.26% -0.0111 -0.1444)
OKLCH	oklch(60.26% 0.145 265.6)
XYZ	xyz(23.3997, 21.3459, 67.1639)
Luminance	0.2135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CD7 #D7B257

analogous

#57BCD7 #577CD7 #7257D7

triadic

#577CD7 #D7577C #7CD757

tetradic

#577CD7 #D757BC #D7B257 #57D772

square

#577CD7 #D757BC #D7B257 #57D772

split-complementary

#577CD7 #D77257 #BCD757

monochromatic

#234291 #2E59C2 #577CD7 #88A3E3 #BAC9EF

Accessibility & contrast

On white

3.99

#577CD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#577CD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CD7

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CD7	#FFFFFF	#000000	##000000
##577CD7	1.00	3.99	5.27	5.27
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5386DB

Deuteranopia (green-blind)

#417AD5

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577cd7;
/* rgb */ color: rgb(87, 124, 215);
/* oklch */ color: oklch(60.3% 0.145 265.6);

Tailwind

colors: {
  custom: {
    50: '#91a1e4',
    500: '#577cd7',
    950: '#000000',
  },
}

SCSS

$custom: #577cd7;
$custom-light: #91a1e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577cd7",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 215
  },
  "hsl": {
    "h": 222.656,
    "s": 61.538,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60263,
    "c": 0.14485,
    "h": 265.6
  },
  "luminance": 0.21348
}

Semantic roles & 50–950 ramp

primary

#577CD7

secondary

#DECFAC

accent

#B643E5

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E15

muted

#7E7E84

Preview Lab

Preview with #577CD7

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

Preview Lab → · Contrast checker → · Palette generator →