#577AD5#577AD5

#577AD5 is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.7% C 0.144 H 266.3°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#577AD5
RGB	rgb(87, 122, 213)
HSL	hsl(223, 60%, 59%)
HSV	hsv(223, 59%, 84%)
CMYK	cmyk(59.2%, 42.7%, 0%, 16.5%)
CIE-LAB	lab(52.67, 15.11, -50.64)
CIE-LCH	lch(52.67, 52.84, 286.61°)
OKLab	oklab(59.72% -0.0094 -0.1442)
OKLCH	oklch(59.72% 0.144 266.3)
XYZ	xyz(22.8962, 20.7475, 65.7360)
Luminance	0.2075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AD5 #D5B257

analogous

#57B9D5 #577AD5 #7357D5

triadic

#577AD5 #D5577A #7AD557

tetradic

#577AD5 #D557B9 #D5B257 #57D573

square

#577AD5 #D557B9 #D5B257 #57D573

split-complementary

#577AD5 #D57357 #B9D557

monochromatic

#24418E #3058BF #577AD5 #88A1E1 #B9C8ED

Accessibility & contrast

On white

4.08

#577AD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#577AD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AD5

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AD5	#FFFFFF	#000000	##000000
##577AD5	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5184D8

Deuteranopia (green-blind)

#4078D3

Tritanopia (blue-blind)

#008E9D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ad5;
/* rgb */ color: rgb(87, 122, 213);
/* oklch */ color: oklch(59.7% 0.144 266.3);

Tailwind

colors: {
  custom: {
    50: '#90a0e2',
    500: '#577ad5',
    950: '#000000',
  },
}

SCSS

$custom: #577ad5;
$custom-light: #90a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#577ad5",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 213
  },
  "hsl": {
    "h": 223.333,
    "s": 60,
    "l": 58.824
  },
  "oklch": {
    "l": 0.59724,
    "c": 0.14448,
    "h": 266.3
  },
  "luminance": 0.20749
}

Semantic roles & 50–950 ramp

primary

#577AD5

secondary

#DDCFAB

accent

#B745E3

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0E0E15

muted

#7E7E83

Preview Lab

Preview with #577AD5

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

Preview Lab → · Contrast checker → · Palette generator →