#577ECD#577ECD

#577ECD is a mid, vivid blue. Relative luminance 0.214; OKLCH L 60.1% C 0.129 H 263.2°. Best body text is #000000 at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#577ECD
RGB	rgb(87, 126, 205)
HSL	hsl(220, 54%, 57%)
HSV	hsv(220, 58%, 80%)
CMYK	cmyk(57.6%, 38.5%, 0%, 19.6%)
CIE-LAB	lab(53.33, 10.02, -45.05)
CIE-LCH	lch(53.33, 46.15, 282.54°)
OKLab	oklab(60.1% -0.0153 -0.1278)
OKLCH	oklch(60.1% 0.129 263.2)
XYZ	xyz(22.4070, 21.3539, 60.6867)
Luminance	0.2136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ECD #CDA657

analogous

#57B9CD #577ECD #6B57CD

triadic

#577ECD #CD577E #7ECD57

tetradic

#577ECD #CD57B9 #CDA657 #57CD6B

square

#577ECD #CD57B9 #CDA657 #57CD6B

split-complementary

#577ECD #CD6B57 #B9CD57

monochromatic

#274583 #355EB2 #577ECD #86A2DB #B5C6E9

Accessibility & contrast

On white

3.98

#577ECD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.27

#577ECD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ECD

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ECD	#FFFFFF	#000000	##000000
##577ECD	1.00	3.98	5.27	5.27
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.27	21.00	1.00	1.00
##000000	5.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D85D0

Deuteranopia (green-blind)

#4E7ACB

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577ecd;
/* rgb */ color: rgb(87, 126, 205);
/* oklch */ color: oklch(60.1% 0.129 263.2);

Tailwind

colors: {
  custom: {
    50: '#8fa3dc',
    500: '#577ecd',
    950: '#000000',
  },
}

SCSS

$custom: #577ecd;
$custom-light: #8fa3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#577ecd",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 205
  },
  "hsl": {
    "h": 220.169,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.60095,
    "c": 0.12868,
    "h": 263.2
  },
  "luminance": 0.21356
}

Semantic roles & 50–950 ramp

primary

#577ECD

secondary

#D8C8A8

accent

#AD4ADD

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ECD

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

Preview Lab → · Contrast checker → · Palette generator →