#577AF3#577AF3

#577AF3 is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.7% C 0.185 H 268.4°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#577AF3
RGB	rgb(87, 122, 243)
HSL	hsl(227, 87%, 65%)
HSV	hsv(227, 64%, 95%)
CMYK	cmyk(64.2%, 49.8%, 0%, 4.7%)
CIE-LAB	lab(54.46, 25.21, -64.58)
CIE-LCH	lch(54.46, 69.33, 291.33°)
OKLab	oklab(61.67% -0.0052 -0.1852)
OKLCH	oklch(61.67% 0.185 268.4)
XYZ	xyz(27.0621, 22.4139, 87.6768)
Luminance	0.2242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AF3 #F3D057

analogous

#57C8F3 #577AF3 #8257F3

triadic

#577AF3 #F3577A #7AF357

tetradic

#577AF3 #F357C8 #F3D057 #57F382

square

#577AF3 #F357C8 #F3D057 #57F382

split-complementary

#577AF3 #F38257 #C8F357

monochromatic

#0E36C2 #1E4DEF #577AF3 #90A7F7 #C9D4FB

Accessibility & contrast

On white

3.83

#577AF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#577AF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AF3

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AF3	#FFFFFF	#000000	##000000
##577AF3	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#358AF7

Deuteranopia (green-blind)

#007CF1

Tritanopia (blue-blind)

#0096AB

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577af3;
/* rgb */ color: rgb(87, 122, 243);
/* oklch */ color: oklch(61.7% 0.185 268.4);

Tailwind

colors: {
  custom: {
    50: '#95a0f8',
    500: '#577af3',
    950: '#000000',
  },
}

SCSS

$custom: #577af3;
$custom-light: #95a0f8;
$custom-dark: #000000;

JSON

{
  "hex": "#577af3",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 243
  },
  "hsl": {
    "h": 226.538,
    "s": 86.667,
    "l": 64.706
  },
  "oklch": {
    "l": 0.61669,
    "c": 0.18524,
    "h": 268.4
  },
  "luminance": 0.22416
}

Semantic roles & 50–950 ramp

primary

#577AF3

secondary

#EEE2B8

accent

#B102E3

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0F0E17

muted

#7E7E85

Preview Lab

Preview with #577AF3

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

Preview Lab → · Contrast checker → · Palette generator →