#577CEE#577CEE

#577CEE is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.7% C 0.176 H 267.5°. Best body text is #000000 at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#577CEE
RGB	rgb(87, 124, 238)
HSL	hsl(225, 82%, 64%)
HSV	hsv(225, 63%, 93%)
CMYK	cmyk(63.4%, 47.9%, 0%, 6.7%)
CIE-LAB	lab(54.67, 22.30, -61.47)
CIE-LCH	lch(54.67, 65.38, 289.94°)
OKLab	oklab(61.73% -0.0076 -0.176)
OKLCH	oklch(61.73% 0.176 267.5)
XYZ	xyz(26.5655, 22.6122, 83.8370)
Luminance	0.2261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CEE #EEC957

analogous

#57C7EE #577CEE #7D57EE

triadic

#577CEE #EE577C #7CEE57

tetradic

#577CEE #EE57C7 #EEC957 #57EE7D

square

#577CEE #EE57C7 #EEC957 #57EE7D

split-complementary

#577CEE #EE7D57 #C7EE57

monochromatic

#133BB8 #1F51E8 #577CEE #8FA7F4 #C6D3F9

Accessibility & contrast

On white

3.80

#577CEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.52

#577CEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CEE

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CEE	#FFFFFF	#000000	##000000
##577CEE	1.00	3.80	5.52	5.52
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.52	21.00	1.00	1.00
##000000	5.52	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#408AF2

Deuteranopia (green-blind)

#1F7CEC

Tritanopia (blue-blind)

#0096AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577cee;
/* rgb */ color: rgb(87, 124, 238);
/* oklch */ color: oklch(61.7% 0.176 267.5);

Tailwind

colors: {
  custom: {
    50: '#94a1f4',
    500: '#577cee',
    950: '#000000',
  },
}

SCSS

$custom: #577cee;
$custom-light: #94a1f4;
$custom-dark: #000000;

JSON

{
  "hex": "#577cee",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 238
  },
  "hsl": {
    "h": 225.298,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61726,
    "c": 0.17614,
    "h": 267.5
  },
  "luminance": 0.22615
}

Semantic roles & 50–950 ramp

primary

#577CEE

secondary

#EBDEB6

accent

#A908DE

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577CEE

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

Preview Lab → · Contrast checker → · Palette generator →