#577ECE#577ECE

#577ECE is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.2% C 0.130 H 263.4°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#577ECE
RGB	rgb(87, 126, 206)
HSL	hsl(220, 55%, 57%)
HSV	hsv(220, 58%, 81%)
CMYK	cmyk(57.8%, 38.8%, 0%, 19.2%)
CIE-LAB	lab(53.39, 10.35, -45.53)
CIE-LCH	lch(53.39, 46.69, 282.81°)
OKLab	oklab(60.15% -0.015 -0.1292)
OKLCH	oklch(60.15% 0.13 263.4)
XYZ	xyz(22.5281, 21.4023, 61.3244)
Luminance	0.2140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ECE #CEA757

analogous

#57BACE #577ECE #6B57CE

triadic

#577ECE #CE577E #7ECE57

tetradic

#577ECE #CE57BA #CEA757 #57CE6B

square

#577ECE #CE57BA #CEA757 #57CE6B

split-complementary

#577ECE #CE6B57 #BACE57

monochromatic

#274584 #345EB3 #577ECE #86A2DC #B6C7EA

Accessibility & contrast

On white

3.98

#577ECE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#577ECE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ECE

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ECE	#FFFFFF	#000000	##000000
##577ECE	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C85D1

Deuteranopia (green-blind)

#4D7ACC

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577ece;
/* rgb */ color: rgb(87, 126, 206);
/* oklch */ color: oklch(60.2% 0.130 263.4);

Tailwind

colors: {
  custom: {
    50: '#8fa3dd',
    500: '#577ece',
    950: '#000000',
  },
}

SCSS

$custom: #577ece;
$custom-light: #8fa3dd;
$custom-dark: #000000;

JSON

{
  "hex": "#577ece",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 206
  },
  "hsl": {
    "h": 220.336,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.60152,
    "c": 0.13006,
    "h": 263.4
  },
  "luminance": 0.21404
}

Semantic roles & 50–950 ramp

primary

#577ECE

secondary

#D8C9A8

accent

#AD4ADE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ECE

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

Preview Lab → · Contrast checker → · Palette generator →