#577FD9#577FD9

#577FD9 is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.0% C 0.144 H 264.5°. Best body text is #000000 at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#577FD9
RGB	rgb(87, 127, 217)
HSL	hsl(222, 63%, 60%)
HSV	hsv(222, 60%, 85%)
CMYK	cmyk(59.9%, 41.5%, 0%, 14.9%)
CIE-LAB	lab(54.25, 13.39, -50.38)
CIE-LCH	lch(54.25, 52.13, 284.89°)
OKLab	oklab(61.01% -0.0139 -0.1434)
OKLCH	oklch(61.01% 0.144 264.5)
XYZ	xyz(24.0399, 22.2127, 68.6528)
Luminance	0.2221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FD9 #D9B157

analogous

#57C0D9 #577FD9 #7057D9

triadic

#577FD9 #D9577F #7FD957

tetradic

#577FD9 #D957C0 #D9B157 #57D970

square

#577FD9 #D957C0 #D9B157 #57D970

split-complementary

#577FD9 #D97057 #C0D957

monochromatic

#214594 #2D5CC6 #577FD9 #89A5E4 #BBCBF0

Accessibility & contrast

On white

3.86

#577FD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.44

#577FD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FD9

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FD9	#FFFFFF	#000000	##000000
##577FD9	1.00	3.86	5.44	5.44
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.44	21.00	1.00	1.00
##000000	5.44	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5788DD

Deuteranopia (green-blind)

#457CD7

Tritanopia (blue-blind)

#0093A1

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fd9;
/* rgb */ color: rgb(87, 127, 217);
/* oklch */ color: oklch(61.0% 0.144 264.5);

Tailwind

colors: {
  custom: {
    50: '#91a3e5',
    500: '#577fd9',
    950: '#000000',
  },
}

SCSS

$custom: #577fd9;
$custom-light: #91a3e5;
$custom-dark: #000000;

JSON

{
  "hex": "#577fd9",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 217
  },
  "hsl": {
    "h": 221.538,
    "s": 63.107,
    "l": 59.608
  },
  "oklch": {
    "l": 0.61012,
    "c": 0.14403,
    "h": 264.5
  },
  "luminance": 0.22215
}

Semantic roles & 50–950 ramp

primary

#577FD9

secondary

#DFD0AD

accent

#B442E6

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FD9

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

Preview Lab → · Contrast checker → · Palette generator →