#577ACA#577ACA

#577ACA is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.1% C 0.129 H 264.9°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#577ACA
RGB	rgb(87, 122, 202)
HSL	hsl(222, 52%, 57%)
HSV	hsv(222, 57%, 79%)
CMYK	cmyk(56.9%, 39.6%, 0%, 20.8%)
CIE-LAB	lab(52.07, 11.46, -45.35)
CIE-LCH	lch(52.07, 46.77, 284.19°)
OKLab	oklab(59.07% -0.0115 -0.1287)
OKLCH	oklch(59.07% 0.129 264.9)
XYZ	xyz(21.5471, 20.2079, 58.6307)
Luminance	0.2021 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ACA #CAA757

analogous

#57B4CA #577ACA #6E57CA

triadic

#577ACA #CA577A #7ACA57

tetradic

#577ACA #CA57B4 #CAA757 #57CA6E

square

#577ACA #CA57B4 #CAA757 #57CA6E

split-complementary

#577ACA #CA6E57 #B4CA57

monochromatic

#28427F #375BAD #577ACA #869FD9 #B4C4E7

Accessibility & contrast

On white

4.17

#577ACA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#577ACA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ACA

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ACA	#FFFFFF	#000000	##000000
##577ACA	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5882CD

Deuteranopia (green-blind)

#4A77C8

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577aca;
/* rgb */ color: rgb(87, 122, 202);
/* oklch */ color: oklch(59.1% 0.129 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0da',
    500: '#577aca',
    950: '#000000',
  },
}

SCSS

$custom: #577aca;
$custom-light: #8fa0da;
$custom-dark: #000000;

JSON

{
  "hex": "#577aca",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 202
  },
  "hsl": {
    "h": 221.739,
    "s": 52.036,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59066,
    "c": 0.12919,
    "h": 264.9
  },
  "luminance": 0.2021
}

Semantic roles & 50–950 ramp

primary

#577ACA

secondary

#D6C8A7

accent

#B04CDB

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577ACA

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

Preview Lab → · Contrast checker → · Palette generator →