#577DF3#577DF3

#577DF3 is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.3% C 0.182 H 267.5°. Best body text is #000000 at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#577DF3
RGB	rgb(87, 125, 243)
HSL	hsl(225, 87%, 65%)
HSV	hsv(225, 64%, 95%)
CMYK	cmyk(64.2%, 48.6%, 0%, 4.7%)
CIE-LAB	lab(55.24, 23.38, -63.33)
CIE-LCH	lch(55.24, 67.51, 290.26°)
OKLab	oklab(62.26% -0.0079 -0.1815)
OKLCH	oklch(62.26% 0.182 267.5)
XYZ	xyz(27.4362, 23.1620, 87.8015)
Luminance	0.2316 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DF3 #F3CD57

analogous

#57CBF3 #577DF3 #7F57F3

triadic

#577DF3 #F3577D #7DF357

tetradic

#577DF3 #F357CB #F3CD57 #57F37F

square

#577DF3 #F357CB #F3CD57 #57F37F

split-complementary

#577DF3 #F37F57 #CBF357

monochromatic

#0E3AC2 #1E51EF #577DF3 #90A9F7 #C9D5FB

Accessibility & contrast

On white

3.73

#577DF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.63

#577DF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DF3

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DF3	#FFFFFF	#000000	##000000
##577DF3	1.00	3.73	5.63	5.63
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.63	21.00	1.00	1.00
##000000	5.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D8CF7

Deuteranopia (green-blind)

#147EF1

Tritanopia (blue-blind)

#0098AC

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577df3;
/* rgb */ color: rgb(87, 125, 243);
/* oklch */ color: oklch(62.3% 0.182 267.5);

Tailwind

colors: {
  custom: {
    50: '#95a2f8',
    500: '#577df3',
    950: '#000000',
  },
}

SCSS

$custom: #577df3;
$custom-light: #95a2f8;
$custom-dark: #000000;

JSON

{
  "hex": "#577df3",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 243
  },
  "hsl": {
    "h": 225.385,
    "s": 86.667,
    "l": 64.706
  },
  "oklch": {
    "l": 0.62258,
    "c": 0.18163,
    "h": 267.5
  },
  "luminance": 0.23165
}

Semantic roles & 50–950 ramp

primary

#577DF3

secondary

#EEE1B8

accent

#AC02E3

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0F0F17

muted

#7E7E85

Preview Lab

Preview with #577DF3

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

Preview Lab → · Contrast checker → · Palette generator →