#577DE1#577DE1

#577DE1 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.1% C 0.157 H 266.2°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#577DE1
RGB	rgb(87, 125, 225)
HSL	hsl(223, 70%, 61%)
HSV	hsv(223, 61%, 88%)
CMYK	cmyk(61.3%, 44.4%, 0%, 11.8%)
CIE-LAB	lab(54.16, 17.29, -55.02)
CIE-LCH	lch(54.16, 57.67, 287.45°)
OKLab	oklab(61.09% -0.0104 -0.157)
OKLCH	oklch(61.09% 0.157 266.2)
XYZ	xyz(24.8500, 22.1275, 74.1810)
Luminance	0.2213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DE1 #E1BB57

analogous

#57C2E1 #577DE1 #7657E1

triadic

#577DE1 #E1577D #7DE157

tetradic

#577DE1 #E157C2 #E1BB57 #57E176

square

#577DE1 #E157C2 #E1BB57 #57E176

split-complementary

#577DE1 #E17657 #C2E157

monochromatic

#1D41A1 #2656D5 #577DE1 #8BA5EA #BFCDF4

Accessibility & contrast

On white

3.87

#577DE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#577DE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DE1

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DE1	#FFFFFF	#000000	##000000
##577DE1	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E88E5

Deuteranopia (green-blind)

#387CDF

Tritanopia (blue-blind)

#0094A4

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577de1;
/* rgb */ color: rgb(87, 125, 225);
/* oklch */ color: oklch(61.1% 0.157 266.2);

Tailwind

colors: {
  custom: {
    50: '#92a2eb',
    500: '#577de1',
    950: '#000000',
  },
}

SCSS

$custom: #577de1;
$custom-light: #92a2eb;
$custom-dark: #000000;

JSON

{
  "hex": "#577de1",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 225
  },
  "hsl": {
    "h": 223.478,
    "s": 69.697,
    "l": 61.176
  },
  "oklch": {
    "l": 0.61089,
    "c": 0.15735,
    "h": 266.2
  },
  "luminance": 0.2213
}

Semantic roles & 50–950 ramp

primary

#577DE1

secondary

#E4D6B0

accent

#9D14D2

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577DE1

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

Preview Lab → · Contrast checker → · Palette generator →