#577AD3#577AD3

#577AD3 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.6% C 0.142 H 266.1°. Best body text is #000000 at 5.13:1 contrast (WCAG AA passes).

Color values

HEX	#577AD3
RGB	rgb(87, 122, 211)
HSL	hsl(223, 58%, 58%)
HSV	hsv(223, 59%, 83%)
CMYK	cmyk(58.8%, 42.2%, 0%, 17.3%)
CIE-LAB	lab(52.56, 14.44, -49.68)
CIE-LCH	lch(52.56, 51.74, 286.21°)
OKLab	oklab(59.6% -0.0097 -0.1414)
OKLCH	oklch(59.6% 0.142 266.1)
XYZ	xyz(22.6439, 20.6466, 64.4073)
Luminance	0.2065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AD3 #D3B057

analogous

#57B8D3 #577AD3 #7257D3

triadic

#577AD3 #D3577A #7AD357

tetradic

#577AD3 #D357B8 #D3B057 #57D372

square

#577AD3 #D357B8 #D3B057 #57D372

split-complementary

#577AD3 #D37257 #B8D357

monochromatic

#24418B #3158BC #577AD3 #87A0E0 #B8C7EC

Accessibility & contrast

On white

4.09

#577AD3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.13

#577AD3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AD3

5.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AD3	#FFFFFF	#000000	##000000
##577AD3	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)

#5383D6

Deuteranopia (green-blind)

#4278D1

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577ad3;
/* rgb */ color: rgb(87, 122, 211);
/* oklch */ color: oklch(59.6% 0.142 266.1);

Tailwind

colors: {
  custom: {
    50: '#90a0e1',
    500: '#577ad3',
    950: '#000000',
  },
}

SCSS

$custom: #577ad3;
$custom-light: #90a0e1;
$custom-dark: #000000;

JSON

{
  "hex": "#577ad3",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 211
  },
  "hsl": {
    "h": 223.065,
    "s": 58.491,
    "l": 58.431
  },
  "oklch": {
    "l": 0.59602,
    "c": 0.14171,
    "h": 266.1
  },
  "luminance": 0.20648
}

Semantic roles & 50–950 ramp

primary

#577AD3

secondary

#DCCEAA

accent

#B646E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577AD3

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

Preview Lab → · Contrast checker → · Palette generator →