#577ACF#577ACF

#577ACF is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.4% C 0.136 H 265.6°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#577ACF
RGB	rgb(87, 122, 207)
HSL	hsl(223, 56%, 58%)
HSV	hsv(223, 58%, 81%)
CMYK	cmyk(58%, 41.1%, 0%, 18.8%)
CIE-LAB	lab(52.34, 13.11, -47.76)
CIE-LCH	lch(52.34, 49.53, 285.35°)
OKLab	oklab(59.36% -0.0105 -0.1358)
OKLCH	oklch(59.36% 0.136 265.6)
XYZ	xyz(22.1487, 20.4485, 61.7992)
Luminance	0.2045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ACF #CFAC57

analogous

#57B6CF #577ACF #7057CF

triadic

#577ACF #CF577A #7ACF57

tetradic

#577ACF #CF57B6 #CFAC57 #57CF70

square

#577ACF #CF57B6 #CFAC57 #57CF70

split-complementary

#577ACF #CF7057 #B6CF57

monochromatic

#264285 #3459B5 #577ACF #87A0DD #B6C5EA

Accessibility & contrast

On white

4.13

#577ACF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#577ACF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ACF

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ACF	#FFFFFF	#000000	##000000
##577ACF	1.00	4.13	5.09	5.09
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5583D2

Deuteranopia (green-blind)

#4578CD

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577acf;
/* rgb */ color: rgb(87, 122, 207);
/* oklch */ color: oklch(59.4% 0.136 265.6);

Tailwind

colors: {
  custom: {
    50: '#8fa0de',
    500: '#577acf',
    950: '#000000',
  },
}

SCSS

$custom: #577acf;
$custom-light: #8fa0de;
$custom-dark: #000000;

JSON

{
  "hex": "#577acf",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 207
  },
  "hsl": {
    "h": 222.5,
    "s": 55.556,
    "l": 57.647
  },
  "oklch": {
    "l": 0.59362,
    "c": 0.13616,
    "h": 265.6
  },
  "luminance": 0.2045
}

Semantic roles & 50–950 ramp

primary

#577ACF

secondary

#D9CBA9

accent

#B349DF

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577ACF

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

Preview Lab → · Contrast checker → · Palette generator →