#577FD8#577FD8

#577FD8 is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.0% C 0.143 H 264.3°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#577FD8
RGB	rgb(87, 127, 216)
HSL	hsl(221, 62%, 59%)
HSV	hsv(221, 60%, 85%)
CMYK	cmyk(59.7%, 41.2%, 0%, 15.3%)
CIE-LAB	lab(54.20, 13.06, -49.90)
CIE-LCH	lch(54.20, 51.58, 284.67°)
OKLab	oklab(60.95% -0.0141 -0.142)
OKLCH	oklch(60.95% 0.143 264.3)
XYZ	xyz(23.9103, 22.1608, 67.9699)
Luminance	0.2216 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FD8 #D8B057

analogous

#57C0D8 #577FD8 #6F57D8

triadic

#577FD8 #D8577F #7FD857

tetradic

#577FD8 #D857C0 #D8B057 #57D86F

square

#577FD8 #D857C0 #D8B057 #57D86F

split-complementary

#577FD8 #D86F57 #C0D857

monochromatic

#224593 #2E5CC4 #577FD8 #89A5E4 #BACBEF

Accessibility & contrast

On white

3.87

#577FD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#577FD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FD8

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FD8	#FFFFFF	#000000	##000000
##577FD8	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5888DB

Deuteranopia (green-blind)

#467CD6

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fd8;
/* rgb */ color: rgb(87, 127, 216);
/* oklch */ color: oklch(61.0% 0.143 264.3);

Tailwind

colors: {
  custom: {
    50: '#91a3e4',
    500: '#577fd8',
    950: '#000000',
  },
}

SCSS

$custom: #577fd8;
$custom-light: #91a3e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577fd8",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 216
  },
  "hsl": {
    "h": 221.395,
    "s": 62.319,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60952,
    "c": 0.14265,
    "h": 264.3
  },
  "luminance": 0.22163
}

Semantic roles & 50–950 ramp

primary

#577FD8

secondary

#DFCFAC

accent

#B342E5

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FD8

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

Preview Lab → · Contrast checker → · Palette generator →