#577FC9#577FC9

#577FC9 is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.1% C 0.122 H 261.9°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#577FC9
RGB	rgb(87, 127, 201)
HSL	hsl(219, 51%, 56%)
HSV	hsv(219, 57%, 79%)
CMYK	cmyk(56.7%, 36.8%, 0%, 21.2%)
CIE-LAB	lab(53.41, 8.10, -42.66)
CIE-LCH	lch(53.41, 43.43, 280.75°)
OKLab	oklab(60.08% -0.0173 -0.1208)
OKLCH	oklch(60.08% 0.122 261.9)
XYZ	xyz(22.0588, 21.4202, 58.2191)
Luminance	0.2142 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FC9 #C9A157

analogous

#57B8C9 #577FC9 #6857C9

triadic

#577FC9 #C9577F #7FC957

tetradic

#577FC9 #C957B8 #C9A157 #57C968

square

#577FC9 #C957B8 #C9A157 #57C968

split-complementary

#577FC9 #C96857 #B8C957

monochromatic

#28467D #3760AC #577FC9 #85A2D8 #B4C6E7

Accessibility & contrast

On white

3.97

#577FC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#577FC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FC9

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FC9	#FFFFFF	#000000	##000000
##577FC9	1.00	3.97	5.28	5.28
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6085CC

Deuteranopia (green-blind)

#527BC7

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fc9;
/* rgb */ color: rgb(87, 127, 201);
/* oklch */ color: oklch(60.1% 0.122 261.9);

Tailwind

colors: {
  custom: {
    50: '#8fa3da',
    500: '#577fc9',
    950: '#000000',
  },
}

SCSS

$custom: #577fc9;
$custom-light: #8fa3da;
$custom-dark: #000000;

JSON

{
  "hex": "#577fc9",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 201
  },
  "hsl": {
    "h": 218.947,
    "s": 51.351,
    "l": 56.471
  },
  "oklch": {
    "l": 0.60083,
    "c": 0.12202,
    "h": 261.9
  },
  "luminance": 0.21422
}

Semantic roles & 50–950 ramp

primary

#577FC9

secondary

#D5C5A7

accent

#A94DDB

background

#F9FAFD

surface

#F1F3FA

border

#CBCDD3

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FC9

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

Preview Lab → · Contrast checker → · Palette generator →