#577FE1#577FE1

#577FE1 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.5% C 0.155 H 265.4°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#577FE1
RGB	rgb(87, 127, 225)
HSL	hsl(223, 70%, 61%)
HSV	hsv(223, 61%, 88%)
CMYK	cmyk(61.3%, 43.6%, 0%, 11.8%)
CIE-LAB	lab(54.70, 16.08, -54.16)
CIE-LCH	lch(54.70, 56.49, 286.53°)
OKLab	oklab(61.5% -0.0124 -0.1545)
OKLCH	oklch(61.5% 0.155 265.4)
XYZ	xyz(25.1058, 22.6390, 74.2663)
Luminance	0.2264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FE1 #E1B957

analogous

#57C4E1 #577FE1 #7457E1

triadic

#577FE1 #E1577F #7FE157

tetradic

#577FE1 #E157C4 #E1B957 #57E174

square

#577FE1 #E157C4 #E1B957 #57E174

split-complementary

#577FE1 #E17457 #C4E157

monochromatic

#1D43A1 #2659D5 #577FE1 #8BA7EA #BFCEF4

Accessibility & contrast

On white

3.80

#577FE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#577FE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FE1

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FE1	#FFFFFF	#000000	##000000
##577FE1	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#528AE5

Deuteranopia (green-blind)

#3D7DDF

Tritanopia (blue-blind)

#0095A5

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577fe1;
/* rgb */ color: rgb(87, 127, 225);
/* oklch */ color: oklch(61.5% 0.155 265.4);

Tailwind

colors: {
  custom: {
    50: '#92a3eb',
    500: '#577fe1',
    950: '#000000',
  },
}

SCSS

$custom: #577fe1;
$custom-light: #92a3eb;
$custom-dark: #000000;

JSON

{
  "hex": "#577fe1",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 225
  },
  "hsl": {
    "h": 222.609,
    "s": 69.697,
    "l": 61.176
  },
  "oklch": {
    "l": 0.61501,
    "c": 0.15496,
    "h": 265.4
  },
  "luminance": 0.22641
}

Semantic roles & 50–950 ramp

primary

#577FE1

secondary

#E4D5B0

accent

#9B14D2

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FE1

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

Preview Lab → · Contrast checker → · Palette generator →