#577CD9#577CD9

#577CD9 is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.4% C 0.148 H 265.8°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#577CD9
RGB	rgb(87, 124, 217)
HSL	hsl(223, 63%, 60%)
HSV	hsv(223, 60%, 85%)
CMYK	cmyk(59.9%, 42.9%, 0%, 14.9%)
CIE-LAB	lab(53.44, 15.22, -51.67)
CIE-LCH	lch(53.44, 53.87, 286.41°)
OKLab	oklab(60.39% -0.0107 -0.1472)
OKLCH	oklch(60.39% 0.148 265.8)
XYZ	xyz(23.6582, 21.4493, 68.5256)
Luminance	0.2145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CD9 #D9B457

analogous

#57BDD9 #577CD9 #7357D9

triadic

#577CD9 #D9577C #7CD957

tetradic

#577CD9 #D957BD #D9B457 #57D973

square

#577CD9 #D957BD #D9B457 #57D973

split-complementary

#577CD9 #D97357 #BDD957

monochromatic

#214294 #2D58C6 #577CD9 #89A3E4 #BBCAF0

Accessibility & contrast

On white

3.97

#577CD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#577CD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CD9

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CD9	#FFFFFF	#000000	##000000
##577CD9	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5286DD

Deuteranopia (green-blind)

#3F7AD7

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577cd9;
/* rgb */ color: rgb(87, 124, 217);
/* oklch */ color: oklch(60.4% 0.148 265.8);

Tailwind

colors: {
  custom: {
    50: '#91a1e5',
    500: '#577cd9',
    950: '#000000',
  },
}

SCSS

$custom: #577cd9;
$custom-light: #91a1e5;
$custom-dark: #000000;

JSON

{
  "hex": "#577cd9",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 217
  },
  "hsl": {
    "h": 222.923,
    "s": 63.107,
    "l": 59.608
  },
  "oklch": {
    "l": 0.60385,
    "c": 0.14759,
    "h": 265.8
  },
  "luminance": 0.21451
}

Semantic roles & 50–950 ramp

primary

#577CD9

secondary

#DFD1AD

accent

#B742E6

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CD9

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

Preview Lab → · Contrast checker → · Palette generator →