#577ACE#577ACE

#577ACE is a mid, vivid blue. Relative luminance 0.204; OKLCH L 59.3% C 0.135 H 265.5°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#577ACE
RGB	rgb(87, 122, 206)
HSL	hsl(222, 55%, 57%)
HSV	hsv(222, 58%, 81%)
CMYK	cmyk(57.8%, 40.8%, 0%, 19.2%)
CIE-LAB	lab(52.29, 12.78, -47.28)
CIE-LCH	lch(52.29, 48.98, 285.13°)
OKLab	oklab(59.3% -0.0107 -0.1343)
OKLCH	oklch(59.3% 0.135 265.5)
XYZ	xyz(22.0268, 20.3998, 61.1573)
Luminance	0.2040 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ACE #CEAB57

analogous

#57B6CE #577ACE #6F57CE

triadic

#577ACE #CE577A #7ACE57

tetradic

#577ACE #CE57B6 #CEAB57 #57CE6F

square

#577ACE #CE57B6 #CEAB57 #57CE6F

split-complementary

#577ACE #CE6F57 #B6CE57

monochromatic

#274284 #345AB3 #577ACE #86A0DC #B6C5EA

Accessibility & contrast

On white

4.13

#577ACE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#577ACE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ACE

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ACE	#FFFFFF	#000000	##000000
##577ACE	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5683D1

Deuteranopia (green-blind)

#4678CC

Tritanopia (blue-blind)

#008D9A

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577ace;
/* rgb */ color: rgb(87, 122, 206);
/* oklch */ color: oklch(59.3% 0.135 265.5);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#577ace",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 206
  },
  "hsl": {
    "h": 222.353,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.59302,
    "c": 0.13477,
    "h": 265.5
  },
  "luminance": 0.20402
}

Semantic roles & 50–950 ramp

primary

#577ACE

secondary

#D8CAA8

accent

#B24ADE

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577ACE

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

Preview Lab → · Contrast checker → · Palette generator →