#577BD8#577BD8

#577BD8 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.147 H 266.2°. Best body text is #000000 at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#577BD8
RGB	rgb(87, 123, 216)
HSL	hsl(223, 62%, 59%)
HSV	hsv(223, 60%, 85%)
CMYK	cmyk(59.7%, 43.1%, 0%, 15.3%)
CIE-LAB	lab(53.11, 15.50, -51.63)
CIE-LCH	lch(53.11, 53.91, 286.71°)
OKLab	oklab(60.12% -0.0099 -0.1471)
OKLCH	oklch(60.12% 0.147 266.2)
XYZ	xyz(23.4039, 21.1481, 67.8011)
Luminance	0.2115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BD8 #D8B457

analogous

#57BCD8 #577BD8 #7457D8

triadic

#577BD8 #D8577B #7BD857

tetradic

#577BD8 #D857BC #D8B457 #57D874

square

#577BD8 #D857BC #D8B457 #57D874

split-complementary

#577BD8 #D87457 #BCD857

monochromatic

#224193 #2E58C4 #577BD8 #89A2E4 #BAC9EF

Accessibility & contrast

On white

4.02

#577BD8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.23

#577BD8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BD8

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BD8	#FFFFFF	#000000	##000000
##577BD8	1.00	4.02	5.23	5.23
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.23	21.00	1.00	1.00
##000000	5.23	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5185DC

Deuteranopia (green-blind)

#3E79D6

Tritanopia (blue-blind)

#00909F

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577bd8;
/* rgb */ color: rgb(87, 123, 216);
/* oklch */ color: oklch(60.1% 0.147 266.2);

Tailwind

colors: {
  custom: {
    50: '#91a0e4',
    500: '#577bd8',
    950: '#000000',
  },
}

SCSS

$custom: #577bd8;
$custom-light: #91a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577bd8",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 216
  },
  "hsl": {
    "h": 223.256,
    "s": 62.319,
    "l": 59.412
  },
  "oklch": {
    "l": 0.60116,
    "c": 0.14742,
    "h": 266.2
  },
  "luminance": 0.2115
}

Semantic roles & 50–950 ramp

primary

#577BD8

secondary

#DFD1AC

accent

#B842E5

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BD8

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

Preview Lab → · Contrast checker → · Palette generator →