#577ED3#577ED3

#577ED3 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.4% C 0.137 H 264.1°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#577ED3
RGB	rgb(87, 126, 211)
HSL	hsl(221, 58%, 58%)
HSV	hsv(221, 59%, 83%)
CMYK	cmyk(58.8%, 40.3%, 0%, 17.3%)
CIE-LAB	lab(53.65, 12.00, -47.94)
CIE-LCH	lch(53.65, 49.42, 284.06°)
OKLab	oklab(60.44% -0.014 -0.1362)
OKLCH	oklch(60.44% 0.137 264.1)
XYZ	xyz(23.1452, 21.6492, 64.5744)
Luminance	0.2165 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ED3 #D3AC57

analogous

#57BCD3 #577ED3 #6E57D3

triadic

#577ED3 #D3577E #7ED357

tetradic

#577ED3 #D357BC #D3AC57 #57D36E

square

#577ED3 #D357BC #D3AC57 #57D36E

split-complementary

#577ED3 #D36E57 #BCD357

monochromatic

#24458B #315DBC #577ED3 #87A3E0 #B8C8EC

Accessibility & contrast

On white

3.94

#577ED3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#577ED3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ED3

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ED3	#FFFFFF	#000000	##000000
##577ED3	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5986D6

Deuteranopia (green-blind)

#497BD1

Tritanopia (blue-blind)

#00919E

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577ed3;
/* rgb */ color: rgb(87, 126, 211);
/* oklch */ color: oklch(60.4% 0.137 264.1);

Tailwind

colors: {
  custom: {
    50: '#90a3e1',
    500: '#577ed3',
    950: '#000000',
  },
}

SCSS

$custom: #577ed3;
$custom-light: #90a3e1;
$custom-dark: #000000;

JSON

{
  "hex": "#577ed3",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 211
  },
  "hsl": {
    "h": 221.129,
    "s": 58.491,
    "l": 58.431
  },
  "oklch": {
    "l": 0.60444,
    "c": 0.13696,
    "h": 264.1
  },
  "luminance": 0.21651
}

Semantic roles & 50–950 ramp

primary

#577ED3

secondary

#DCCCAA

accent

#B146E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ED3

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

Preview Lab → · Contrast checker → · Palette generator →