#577AC9#577AC9

#577AC9 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.128 H 264.7°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#577AC9
RGB	rgb(87, 122, 201)
HSL	hsl(222, 51%, 56%)
HSV	hsv(222, 57%, 79%)
CMYK	cmyk(56.7%, 39.3%, 0%, 21.2%)
CIE-LAB	lab(52.02, 11.13, -44.86)
CIE-LCH	lch(52.02, 46.22, 283.94°)
OKLab	oklab(59.01% -0.0117 -0.1273)
OKLCH	oklch(59.01% 0.128 264.7)
XYZ	xyz(21.4291, 20.1607, 58.0092)
Luminance	0.2016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AC9 #C9A657

analogous

#57B3C9 #577AC9 #6D57C9

triadic

#577AC9 #C9577A #7AC957

tetradic

#577AC9 #C957B3 #C9A657 #57C96D

square

#577AC9 #C957B3 #C9A657 #57C96D

split-complementary

#577AC9 #C96D57 #B3C957

monochromatic

#28427D #375BAC #577AC9 #859FD8 #B4C3E7

Accessibility & contrast

On white

4.17

#577AC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#577AC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AC9

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AC9	#FFFFFF	#000000	##000000
##577AC9	1.00	4.17	5.03	5.03
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5982CC

Deuteranopia (green-blind)

#4A77C7

Tritanopia (blue-blind)

#018B98

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577ac9;
/* rgb */ color: rgb(87, 122, 201);
/* oklch */ color: oklch(59.0% 0.128 264.7);

Tailwind

colors: {
  custom: {
    50: '#8fa0da',
    500: '#577ac9',
    950: '#000000',
  },
}

SCSS

$custom: #577ac9;
$custom-light: #8fa0da;
$custom-dark: #000000;

JSON

{
  "hex": "#577ac9",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 201
  },
  "hsl": {
    "h": 221.579,
    "s": 51.351,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59008,
    "c": 0.1278,
    "h": 264.7
  },
  "luminance": 0.20162
}

Semantic roles & 50–950 ramp

primary

#577AC9

secondary

#D5C7A7

accent

#AF4DDB

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577AC9

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

Preview Lab → · Contrast checker → · Palette generator →