#577FD7#577FD7

#577FD7 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 60.9% C 0.141 H 264.2°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#577FD7
RGB	rgb(87, 127, 215)
HSL	hsl(221, 62%, 59%)
HSV	hsv(221, 60%, 84%)
CMYK	cmyk(59.5%, 40.9%, 0%, 15.7%)
CIE-LAB	lab(54.14, 12.73, -49.42)
CIE-LCH	lch(54.14, 51.03, 284.44°)
OKLab	oklab(60.89% -0.0142 -0.1406)
OKLCH	oklch(60.89% 0.141 264.2)
XYZ	xyz(23.7814, 22.1093, 67.2911)
Luminance	0.2211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FD7 #D7AF57

analogous

#57BFD7 #577FD7 #6F57D7

triadic

#577FD7 #D7577F #7FD757

tetradic

#577FD7 #D757BF #D7AF57 #57D76F

square

#577FD7 #D757BF #D7AF57 #57D76F

split-complementary

#577FD7 #D76F57 #BFD757

monochromatic

#234591 #2E5DC2 #577FD7 #88A5E3 #BACAEF

Accessibility & contrast

On white

3.87

#577FD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#577FD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FD7

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FD7	#FFFFFF	#000000	##000000
##577FD7	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5888DA

Deuteranopia (green-blind)

#477CD5

Tritanopia (blue-blind)

#0093A0

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577fd7;
/* rgb */ color: rgb(87, 127, 215);
/* oklch */ color: oklch(60.9% 0.141 264.2);

Tailwind

colors: {
  custom: {
    50: '#91a3e4',
    500: '#577fd7',
    950: '#000000',
  },
}

SCSS

$custom: #577fd7;
$custom-light: #91a3e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577fd7",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 215
  },
  "hsl": {
    "h": 221.25,
    "s": 61.538,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60892,
    "c": 0.14129,
    "h": 264.2
  },
  "luminance": 0.22111
}

Semantic roles & 50–950 ramp

primary

#577FD7

secondary

#DECEAC

accent

#B243E5

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F15

muted

#7E7F84

Preview Lab

Preview with #577FD7

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

Preview Lab → · Contrast checker → · Palette generator →