#577BF2#577BF2

#577BF2 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.8% C 0.183 H 268.0°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#577BF2
RGB	rgb(87, 123, 242)
HSL	hsl(226, 86%, 65%)
HSV	hsv(226, 64%, 95%)
CMYK	cmyk(64%, 49.2%, 0%, 5.1%)
CIE-LAB	lab(54.66, 24.26, -63.71)
CIE-LCH	lch(54.66, 68.17, 290.85°)
OKLab	oklab(61.8% -0.0062 -0.1826)
OKLCH	oklch(61.8% 0.183 268)
XYZ	xyz(27.0350, 22.6005, 86.9248)
Luminance	0.2260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BF2 #F2CE57

analogous

#57C8F2 #577BF2 #8157F2

triadic

#577BF2 #F2577B #7BF257

tetradic

#577BF2 #F257C8 #F2CE57 #57F281

square

#577BF2 #F257C8 #F2CE57 #57F281

split-complementary

#577BF2 #F28157 #C8F257

monochromatic

#0F38C0 #1E4EEE #577BF2 #90A8F6 #C9D4FB

Accessibility & contrast

On white

3.80

#577BF2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#577BF2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BF2

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BF2	#FFFFFF	#000000	##000000
##577BF2	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#398AF6

Deuteranopia (green-blind)

#0A7CF0

Tritanopia (blue-blind)

#0097AB

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577bf2;
/* rgb */ color: rgb(87, 123, 242);
/* oklch */ color: oklch(61.8% 0.183 268.0);

Tailwind

colors: {
  custom: {
    50: '#95a0f7',
    500: '#577bf2',
    950: '#000000',
  },
}

SCSS

$custom: #577bf2;
$custom-light: #95a0f7;
$custom-dark: #000000;

JSON

{
  "hex": "#577bf2",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 242
  },
  "hsl": {
    "h": 226.065,
    "s": 85.635,
    "l": 64.51
  },
  "oklch": {
    "l": 0.61797,
    "c": 0.18271,
    "h": 268
  },
  "luminance": 0.22603
}

Semantic roles & 50–950 ramp

primary

#577BF2

secondary

#EDE1B8

accent

#AE03E2

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0F0E17

muted

#7E7E85

Preview Lab

Preview with #577BF2

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

Preview Lab → · Contrast checker → · Palette generator →