#577BE7#577BE7

#577BE7 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.168 H 267.4°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#577BE7
RGB	rgb(87, 123, 231)
HSL	hsl(225, 75%, 62%)
HSV	hsv(225, 62%, 91%)
CMYK	cmyk(62.3%, 46.8%, 0%, 9.4%)
CIE-LAB	lab(53.98, 20.54, -58.66)
CIE-LCH	lch(53.98, 62.15, 289.30°)
OKLab	oklab(61.07% -0.0075 -0.1677)
OKLCH	oklch(61.07% 0.168 267.4)
XYZ	xyz(25.4323, 21.9594, 78.4842)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BE7 #E7C357

analogous

#57C3E7 #577BE7 #7B57E7

triadic

#577BE7 #E7577B #7BE757

tetradic

#577BE7 #E757C3 #E7C357 #57E77B

square

#577BE7 #E757C3 #E7C357 #57E77B

split-complementary

#577BE7 #E77B57 #C3E757

monochromatic

#183DAB #2151DF #577BE7 #8DA5EF #C2CFF6

Accessibility & contrast

On white

3.89

#577BE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#577BE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BE7

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BE7	#FFFFFF	#000000	##000000
##577BE7	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4588EB

Deuteranopia (green-blind)

#2A7BE5

Tritanopia (blue-blind)

#0094A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577be7;
/* rgb */ color: rgb(87, 123, 231);
/* oklch */ color: oklch(61.1% 0.168 267.4);

Tailwind

colors: {
  custom: {
    50: '#93a0ef',
    500: '#577be7',
    950: '#000000',
  },
}

SCSS

$custom: #577be7;
$custom-light: #93a0ef;
$custom-dark: #000000;

JSON

{
  "hex": "#577be7",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 231
  },
  "hsl": {
    "h": 225,
    "s": 75,
    "l": 62.353
  },
  "oklch": {
    "l": 0.61066,
    "c": 0.16792,
    "h": 267.4
  },
  "luminance": 0.21962
}

Semantic roles & 50–950 ramp

primary

#577BE7

secondary

#E7DAB3

accent

#A50ED7

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BE7

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

Preview Lab → · Contrast checker → · Palette generator →