#577FE7#577FE7

#577FE7 is a mid, vivid blue. Relative luminance 0.230; OKLCH L 61.9% C 0.163 H 266.0°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#577FE7
RGB	rgb(87, 127, 231)
HSL	hsl(223, 75%, 62%)
HSV	hsv(223, 62%, 91%)
CMYK	cmyk(62.3%, 45%, 0%, 9.4%)
CIE-LAB	lab(55.04, 18.10, -56.96)
CIE-LCH	lch(55.04, 59.77, 287.62°)
OKLab	oklab(61.88% -0.0114 -0.1627)
OKLCH	oklch(61.88% 0.163 266)
XYZ	xyz(25.9387, 22.9722, 78.6529)
Luminance	0.2298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FE7 #E7BF57

analogous

#57C7E7 #577FE7 #7757E7

triadic

#577FE7 #E7577F #7FE757

tetradic

#577FE7 #E757C7 #E7BF57 #57E777

square

#577FE7 #E757C7 #E7BF57 #57E777

split-complementary

#577FE7 #E77757 #C7E757

monochromatic

#1841AB #2156DF #577FE7 #8DA8EF #C2D1F6

Accessibility & contrast

On white

3.75

#577FE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#577FE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FE7

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FE7	#FFFFFF	#000000	##000000
##577FE7	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D8BEB

Deuteranopia (green-blind)

#357EE5

Tritanopia (blue-blind)

#0097A8

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577fe7;
/* rgb */ color: rgb(87, 127, 231);
/* oklch */ color: oklch(61.9% 0.163 266.0);

Tailwind

colors: {
  custom: {
    50: '#93a3ef',
    500: '#577fe7',
    950: '#000000',
  },
}

SCSS

$custom: #577fe7;
$custom-light: #93a3ef;
$custom-dark: #000000;

JSON

{
  "hex": "#577fe7",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 231
  },
  "hsl": {
    "h": 223.333,
    "s": 75,
    "l": 62.353
  },
  "oklch": {
    "l": 0.61877,
    "c": 0.1631,
    "h": 266
  },
  "luminance": 0.22975
}

Semantic roles & 50–950 ramp

primary

#577FE7

secondary

#E7D9B3

accent

#9F0ED7

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FE7

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

Preview Lab → · Contrast checker → · Palette generator →