#577DEC#577DEC

#577DEC is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.8% C 0.172 H 267.1°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX	#577DEC
RGB	rgb(87, 125, 236)
HSL	hsl(225, 80%, 63%)
HSV	hsv(225, 63%, 93%)
CMYK	cmyk(63.1%, 47%, 0%, 7.5%)
CIE-LAB	lab(54.81, 21.01, -60.13)
CIE-LCH	lch(54.81, 63.69, 289.26°)
OKLab	oklab(61.79% -0.0088 -0.172)
OKLCH	oklch(61.79% 0.172 267.1)
XYZ	xyz(26.3992, 22.7472, 82.3401)
Luminance	0.2275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DEC #ECC657

analogous

#57C7EC #577DEC #7B57EC

triadic

#577DEC #EC577D #7DEC57

tetradic

#577DEC #EC57C7 #ECC657 #57EC7B

square

#577DEC #EC57C7 #ECC657 #57EC7B

split-complementary

#577DEC #EC7B57 #C7EC57

monochromatic

#143DB4 #2052E6 #577DEC #8EA8F2 #C5D2F8

Accessibility & contrast

On white

3.78

#577DEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.55

#577DEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DEC

5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DEC	#FFFFFF	#000000	##000000
##577DEC	1.00	3.78	5.55	5.55
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.55	21.00	1.00	1.00
##000000	5.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448AF0

Deuteranopia (green-blind)

#277DEA

Tritanopia (blue-blind)

#0097A9

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577dec;
/* rgb */ color: rgb(87, 125, 236);
/* oklch */ color: oklch(61.8% 0.172 267.1);

Tailwind

colors: {
  custom: {
    50: '#94a2f3',
    500: '#577dec',
    950: '#000000',
  },
}

SCSS

$custom: #577dec;
$custom-light: #94a2f3;
$custom-dark: #000000;

JSON

{
  "hex": "#577dec",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 236
  },
  "hsl": {
    "h": 224.698,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61794,
    "c": 0.17225,
    "h": 267.1
  },
  "luminance": 0.2275
}

Semantic roles & 50–950 ramp

primary

#577DEC

secondary

#EADCB5

accent

#A60ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #577DEC

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

Preview Lab → · Contrast checker → · Palette generator →