#577DDC#577DDC

#577DDC is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.8% C 0.151 H 265.7°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#577DDC
RGB	rgb(87, 125, 220)
HSL	hsl(223, 66%, 60%)
HSV	hsv(223, 60%, 86%)
CMYK	cmyk(60.5%, 43.2%, 0%, 13.7%)
CIE-LAB	lab(53.88, 15.62, -52.66)
CIE-LCH	lch(53.88, 54.93, 286.52°)
OKLab	oklab(60.78% -0.0112 -0.1501)
OKLCH	oklch(60.78% 0.151 265.7)
XYZ	xyz(24.1779, 21.8587, 70.6413)
Luminance	0.2186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DDC #DCB657

analogous

#57C0DC #577DDC #7357DC

triadic

#577DDC #DC577D #7DDC57

tetradic

#577DDC #DC57C0 #DCB657 #57DC73

square

#577DDC #DC57C0 #DCB657 #57DC73

split-complementary

#577DDC #DC7357 #C0DC57

monochromatic

#204299 #2A58CB #577DDC #8AA4E7 #BCCBF1

Accessibility & contrast

On white

3.91

#577DDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#577DDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DDC

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DDC	#FFFFFF	#000000	##000000
##577DDC	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5287E0

Deuteranopia (green-blind)

#3E7BDA

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577ddc;
/* rgb */ color: rgb(87, 125, 220);
/* oklch */ color: oklch(60.8% 0.151 265.7);

Tailwind

colors: {
  custom: {
    50: '#91a2e7',
    500: '#577ddc',
    950: '#000000',
  },
}

SCSS

$custom: #577ddc;
$custom-light: #91a2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#577ddc",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 220
  },
  "hsl": {
    "h": 222.857,
    "s": 65.517,
    "l": 60.196
  },
  "oklch": {
    "l": 0.60778,
    "c": 0.15052,
    "h": 265.7
  },
  "luminance": 0.21861
}

Semantic roles & 50–950 ramp

primary

#577DDC

secondary

#E1D2AE

accent

#9A18CD

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577DDC

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

Preview Lab → · Contrast checker → · Palette generator →