#577ACD#577ACD

#577ACD is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.2% C 0.133 H 265.3°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#577ACD
RGB	rgb(87, 122, 205)
HSL	hsl(222, 54%, 57%)
HSV	hsv(222, 58%, 80%)
CMYK	cmyk(57.6%, 40.5%, 0%, 19.6%)
CIE-LAB	lab(52.23, 12.45, -46.80)
CIE-LCH	lch(52.23, 48.43, 284.90°)
OKLab	oklab(59.24% -0.0109 -0.1329)
OKLCH	oklch(59.24% 0.133 265.3)
XYZ	xyz(21.9057, 20.3513, 60.5196)
Luminance	0.2035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ACD #CDAA57

analogous

#57B5CD #577ACD #6F57CD

triadic

#577ACD #CD577A #7ACD57

tetradic

#577ACD #CD57B5 #CDAA57 #57CD6F

square

#577ACD #CD57B5 #CDAA57 #57CD6F

split-complementary

#577ACD #CD6F57 #B5CD57

monochromatic

#274283 #355AB2 #577ACD #869FDB #B5C5E9

Accessibility & contrast

On white

4.14

#577ACD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#577ACD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ACD

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ACD	#FFFFFF	#000000	##000000
##577ACD	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5782D0

Deuteranopia (green-blind)

#4778CB

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577acd;
/* rgb */ color: rgb(87, 122, 205);
/* oklch */ color: oklch(59.2% 0.133 265.3);

Tailwind

colors: {
  custom: {
    50: '#8fa0dd',
    500: '#577acd',
    950: '#000000',
  },
}

SCSS

$custom: #577acd;
$custom-light: #8fa0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#577acd",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 205
  },
  "hsl": {
    "h": 222.203,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59243,
    "c": 0.13338,
    "h": 265.3
  },
  "luminance": 0.20353
}

Semantic roles & 50–950 ramp

primary

#577ACD

secondary

#D8CAA8

accent

#B24ADD

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577ACD

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

Preview Lab → · Contrast checker → · Palette generator →