#577DEE#577DEE

#577DEE is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.9% C 0.175 H 267.2°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#577DEE
RGB	rgb(87, 125, 238)
HSL	hsl(225, 82%, 64%)
HSV	hsv(225, 63%, 93%)
CMYK	cmyk(63.4%, 47.5%, 0%, 6.7%)
CIE-LAB	lab(54.93, 21.69, -61.04)
CIE-LCH	lch(54.93, 64.78, 289.56°)
OKLab	oklab(61.93% -0.0085 -0.1747)
OKLCH	oklch(61.93% 0.175 267.2)
XYZ	xyz(26.6914, 22.8641, 83.8789)
Luminance	0.2287 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DEE #EEC857

analogous

#57C8EE #577DEE #7C57EE

triadic

#577DEE #EE577D #7DEE57

tetradic

#577DEE #EE57C8 #EEC857 #57EE7C

square

#577DEE #EE57C8 #EEC857 #57EE7C

split-complementary

#577DEE #EE7C57 #C8EE57

monochromatic

#133CB8 #1F52E8 #577DEE #8FA8F4 #C6D3F9

Accessibility & contrast

On white

3.77

#577DEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#577DEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DEE

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DEE	#FFFFFF	#000000	##000000
##577DEE	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#428BF2

Deuteranopia (green-blind)

#237DEC

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577dee;
/* rgb */ color: rgb(87, 125, 238);
/* oklch */ color: oklch(61.9% 0.175 267.2);

Tailwind

colors: {
  custom: {
    50: '#94a2f4',
    500: '#577dee',
    950: '#000000',
  },
}

SCSS

$custom: #577dee;
$custom-light: #94a2f4;
$custom-dark: #000000;

JSON

{
  "hex": "#577dee",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 238
  },
  "hsl": {
    "h": 224.901,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61926,
    "c": 0.17494,
    "h": 267.2
  },
  "luminance": 0.22867
}

Semantic roles & 50–950 ramp

primary

#577DEE

secondary

#EBDEB6

accent

#A808DE

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #577DEE

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

Preview Lab → · Contrast checker → · Palette generator →