#577CEA#577CEA

#577CEA is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.5% C 0.171 H 267.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#577CEA
RGB	rgb(87, 124, 234)
HSL	hsl(225, 78%, 63%)
HSV	hsv(225, 63%, 92%)
CMYK	cmyk(62.8%, 47%, 0%, 8.2%)
CIE-LAB	lab(54.43, 20.94, -59.63)
CIE-LCH	lch(54.43, 63.20, 289.35°)
OKLab	oklab(61.46% -0.0081 -0.1706)
OKLCH	oklch(61.46% 0.171 267.3)
XYZ	xyz(25.9843, 22.3797, 80.7763)
Luminance	0.2238 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CEA #EAC557

analogous

#57C5EA #577CEA #7B57EA

triadic

#577CEA #EA577C #7CEA57

tetradic

#577CEA #EA57C5 #EAC557 #57EA7B

square

#577CEA #EA57C5 #EAC557 #57EA7B

split-complementary

#577CEA #EA7B57 #C5EA57

monochromatic

#163DB1 #2152E3 #577CEA #8DA6F1 #C4D1F8

Accessibility & contrast

On white

3.83

#577CEA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#577CEA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CEA

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CEA	#FFFFFF	#000000	##000000
##577CEA	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4489EE

Deuteranopia (green-blind)

#287CE8

Tritanopia (blue-blind)

#0095A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577cea;
/* rgb */ color: rgb(87, 124, 234);
/* oklch */ color: oklch(61.5% 0.171 267.3);

Tailwind

colors: {
  custom: {
    50: '#94a1f1',
    500: '#577cea',
    950: '#000000',
  },
}

SCSS

$custom: #577cea;
$custom-light: #94a1f1;
$custom-dark: #000000;

JSON

{
  "hex": "#577cea",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 234
  },
  "hsl": {
    "h": 224.898,
    "s": 77.778,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61463,
    "c": 0.17076,
    "h": 267.3
  },
  "luminance": 0.22382
}

Semantic roles & 50–950 ramp

primary

#577CEA

secondary

#E9DCB4

accent

#A60BDA

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577CEA

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

Preview Lab → · Contrast checker → · Palette generator →