#577CE9#577CE9

#577CE9 is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.4% C 0.169 H 267.2°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#577CE9
RGB	rgb(87, 124, 233)
HSL	hsl(225, 77%, 63%)
HSV	hsv(225, 63%, 91%)
CMYK	cmyk(62.7%, 46.8%, 0%, 8.6%)
CIE-LAB	lab(54.37, 20.60, -59.16)
CIE-LCH	lch(54.37, 62.65, 289.20°)
OKLab	oklab(61.4% -0.0082 -0.1692)
OKLCH	oklch(61.4% 0.169 267.2)
XYZ	xyz(25.8411, 22.3224, 80.0219)
Luminance	0.2233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CE9 #E9C457

analogous

#57C5E9 #577CE9 #7B57E9

triadic

#577CE9 #E9577C #7CE957

tetradic

#577CE9 #E957C5 #E9C457 #57E97B

square

#577CE9 #E957C5 #E9C457 #57E97B

split-complementary

#577CE9 #E97B57 #C5E957

monochromatic

#173DAF #2152E2 #577CE9 #8DA6F0 #C3D0F7

Accessibility & contrast

On white

3.84

#577CE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#577CE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CE9

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CE9	#FFFFFF	#000000	##000000
##577CE9	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4589ED

Deuteranopia (green-blind)

#2A7CE7

Tritanopia (blue-blind)

#0095A7

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577ce9;
/* rgb */ color: rgb(87, 124, 233);
/* oklch */ color: oklch(61.4% 0.169 267.2);

Tailwind

colors: {
  custom: {
    50: '#93a1f1',
    500: '#577ce9',
    950: '#000000',
  },
}

SCSS

$custom: #577ce9;
$custom-light: #93a1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#577ce9",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 233
  },
  "hsl": {
    "h": 224.795,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61398,
    "c": 0.16941,
    "h": 267.2
  },
  "luminance": 0.22325
}

Semantic roles & 50–950 ramp

primary

#577CE9

secondary

#E8DBB3

accent

#A50CD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577CE9

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

Preview Lab → · Contrast checker → · Palette generator →