#577BDC#577BDC

#577BDC is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.4% C 0.153 H 266.6°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#577BDC
RGB	rgb(87, 123, 220)
HSL	hsl(224, 66%, 60%)
HSV	hsv(224, 60%, 86%)
CMYK	cmyk(60.5%, 44.1%, 0%, 13.7%)
CIE-LAB	lab(53.34, 16.84, -53.52)
CIE-LCH	lch(53.34, 56.11, 287.46°)
OKLab	oklab(60.36% -0.0092 -0.1526)
OKLCH	oklch(60.36% 0.153 266.6)
XYZ	xyz(23.9273, 21.3574, 70.5577)
Luminance	0.2136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BDC #DCB857

analogous

#57BEDC #577BDC #7557DC

triadic

#577BDC #DC577B #7BDC57

tetradic

#577BDC #DC57BE #DCB857 #57DC75

square

#577BDC #DC57BE #DCB857 #57DC75

split-complementary

#577BDC #DC7557 #BEDC57

monochromatic

#204199 #2A56CB #577BDC #8AA3E7 #BCCBF1

Accessibility & contrast

On white

3.98

#577BDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#577BDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BDC

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BDC	#FFFFFF	#000000	##000000
##577BDC	1.00	3.98	5.27	5.27
#FFFFFF	3.98	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)

#4E86E0

Deuteranopia (green-blind)

#3A7ADA

Tritanopia (blue-blind)

#0091A1

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577bdc;
/* rgb */ color: rgb(87, 123, 220);
/* oklch */ color: oklch(60.4% 0.153 266.6);

Tailwind

colors: {
  custom: {
    50: '#91a0e7',
    500: '#577bdc',
    950: '#000000',
  },
}

SCSS

$custom: #577bdc;
$custom-light: #91a0e7;
$custom-dark: #000000;

JSON

{
  "hex": "#577bdc",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 220
  },
  "hsl": {
    "h": 223.759,
    "s": 65.517,
    "l": 60.196
  },
  "oklch": {
    "l": 0.60364,
    "c": 0.15292,
    "h": 266.6
  },
  "luminance": 0.21359
}

Semantic roles & 50–950 ramp

primary

#577BDC

secondary

#E1D3AE

accent

#9C18CD

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BDC

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

Preview Lab → · Contrast checker → · Palette generator →