#577ECA#577ECA

#577ECA is a mid, vivid blue. Relative luminance 0.212; OKLCH L 59.9% C 0.125 H 262.6°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#577ECA
RGB	rgb(87, 126, 202)
HSL	hsl(220, 52%, 57%)
HSV	hsv(220, 57%, 79%)
CMYK	cmyk(56.9%, 37.6%, 0%, 20.8%)
CIE-LAB	lab(53.18, 9.03, -43.59)
CIE-LCH	lch(53.18, 44.52, 281.71°)
OKLab	oklab(59.92% -0.0159 -0.1235)
OKLCH	oklch(59.92% 0.125 262.6)
XYZ	xyz(22.0484, 21.2104, 58.7978)
Luminance	0.2121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ECA #CAA357

analogous

#57B8CA #577ECA #6A57CA

triadic

#577ECA #CA577E #7ECA57

tetradic

#577ECA #CA57B8 #CAA357 #57CA6A

square

#577ECA #CA57B8 #CAA357 #57CA6A

split-complementary

#577ECA #CA6A57 #B8CA57

monochromatic

#28457F #375FAD #577ECA #86A2D9 #B4C5E7

Accessibility & contrast

On white

4.01

#577ECA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#577ECA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ECA

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ECA	#FFFFFF	#000000	##000000
##577ECA	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E85CD

Deuteranopia (green-blind)

#507AC8

Tritanopia (blue-blind)

#008F9A

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577eca;
/* rgb */ color: rgb(87, 126, 202);
/* oklch */ color: oklch(59.9% 0.125 262.6);

Tailwind

colors: {
  custom: {
    50: '#8fa3da',
    500: '#577eca',
    950: '#000000',
  },
}

SCSS

$custom: #577eca;
$custom-light: #8fa3da;
$custom-dark: #000000;

JSON

{
  "hex": "#577eca",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 202
  },
  "hsl": {
    "h": 219.652,
    "s": 52.036,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59923,
    "c": 0.12453,
    "h": 262.6
  },
  "luminance": 0.21212
}

Semantic roles & 50–950 ramp

primary

#577ECA

secondary

#D6C6A7

accent

#AB4CDB

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ECA

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

Preview Lab → · Contrast checker → · Palette generator →