#577AD7#577AD7

#577AD7 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.147 H 266.5°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#577AD7
RGB	rgb(87, 122, 215)
HSL	hsl(224, 62%, 59%)
HSV	hsv(224, 60%, 84%)
CMYK	cmyk(59.5%, 43.3%, 0%, 15.7%)
CIE-LAB	lab(52.78, 15.78, -51.59)
CIE-LCH	lch(52.78, 53.94, 287.00°)
OKLab	oklab(59.85% -0.009 -0.147)
OKLCH	oklch(59.85% 0.147 266.5)
XYZ	xyz(23.1516, 20.8497, 67.0812)
Luminance	0.2085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AD7 #D7B457

analogous

#57BAD7 #577AD7 #7457D7

triadic

#577AD7 #D7577A #7AD757

tetradic

#577AD7 #D757BA #D7B457 #57D774

square

#577AD7 #D757BA #D7B457 #57D774

split-complementary

#577AD7 #D77457 #BAD757

monochromatic

#234191 #2E57C2 #577AD7 #88A1E3 #BAC8EF

Accessibility & contrast

On white

4.06

#577AD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#577AD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AD7

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AD7	#FFFFFF	#000000	##000000
##577AD7	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5084DB

Deuteranopia (green-blind)

#3E79D5

Tritanopia (blue-blind)

#008F9E

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ad7;
/* rgb */ color: rgb(87, 122, 215);
/* oklch */ color: oklch(59.8% 0.147 266.5);

Tailwind

colors: {
  custom: {
    50: '#91a0e4',
    500: '#577ad7',
    950: '#000000',
  },
}

SCSS

$custom: #577ad7;
$custom-light: #91a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577ad7",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 215
  },
  "hsl": {
    "h": 223.594,
    "s": 61.538,
    "l": 59.216
  },
  "oklch": {
    "l": 0.59847,
    "c": 0.14725,
    "h": 266.5
  },
  "luminance": 0.20852
}

Semantic roles & 50–950 ramp

primary

#577AD7

secondary

#DED0AC

accent

#B843E5

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E15

muted

#7E7E84

Preview Lab

Preview with #577AD7

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

Preview Lab → · Contrast checker → · Palette generator →