#577BCE#577BCE

#577BCE is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.5% C 0.134 H 264.9°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#577BCE
RGB	rgb(87, 123, 206)
HSL	hsl(222, 55%, 57%)
HSV	hsv(222, 58%, 81%)
CMYK	cmyk(57.8%, 40.3%, 0%, 19.2%)
CIE-LAB	lab(52.56, 12.17, -46.85)
CIE-LCH	lch(52.56, 48.40, 284.57°)
OKLab	oklab(59.51% -0.0118 -0.1331)
OKLCH	oklch(59.51% 0.134 264.9)
XYZ	xyz(22.1502, 20.6466, 61.1985)
Luminance	0.2065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BCE #CEAA57

analogous

#57B6CE #577BCE #6F57CE

triadic

#577BCE #CE577B #7BCE57

tetradic

#577BCE #CE57B6 #CEAA57 #57CE6F

square

#577BCE #CE57B6 #CEAA57 #57CE6F

split-complementary

#577BCE #CE6F57 #B6CE57

monochromatic

#274384 #345BB3 #577BCE #86A0DC #B6C5EA

Accessibility & contrast

On white

4.09

#577BCE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#577BCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BCE

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BCE	#FFFFFF	#000000	##000000
##577BCE	1.00	4.09	5.13	5.13
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.13	21.00	1.00	1.00
##000000	5.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5883D1

Deuteranopia (green-blind)

#4878CC

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577bce;
/* rgb */ color: rgb(87, 123, 206);
/* oklch */ color: oklch(59.5% 0.134 264.9);

Tailwind

colors: {
  custom: {
    50: '#8fa0dd',
    500: '#577bce',
    950: '#000000',
  },
}

SCSS

$custom: #577bce;
$custom-light: #8fa0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#577bce",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 206
  },
  "hsl": {
    "h": 221.849,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.59514,
    "c": 0.13358,
    "h": 264.9
  },
  "luminance": 0.20648
}

Semantic roles & 50–950 ramp

primary

#577BCE

secondary

#D8CAA8

accent

#B14ADE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577BCE

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

Preview Lab → · Contrast checker → · Palette generator →