#577BDA#577BDA

#577BDA is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.2% C 0.150 H 266.4°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#577BDA
RGB	rgb(87, 123, 218)
HSL	hsl(224, 64%, 60%)
HSV	hsv(224, 60%, 85%)
CMYK	cmyk(60.1%, 43.6%, 0%, 14.5%)
CIE-LAB	lab(53.22, 16.17, -52.58)
CIE-LCH	lch(53.22, 55.01, 287.09°)
OKLab	oklab(60.24% -0.0095 -0.1499)
OKLCH	oklch(60.24% 0.15 266.4)
XYZ	xyz(23.6640, 21.2521, 69.1711)
Luminance	0.2125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BDA #DAB657

analogous

#57BDDA #577BDA #7457DA

triadic

#577BDA #DA577B #7BDA57

tetradic

#577BDA #DA57BD #DAB657 #57DA74

square

#577BDA #DA57BD #DAB657 #57DA74

split-complementary

#577BDA #DA7457 #BDDA57

monochromatic

#214196 #2C57C8 #577BDA #89A2E5 #BBCAF0

Accessibility & contrast

On white

4.00

#577BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#577BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BDA

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BDA	#FFFFFF	#000000	##000000
##577BDA	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5085DE

Deuteranopia (green-blind)

#3C7AD8

Tritanopia (blue-blind)

#0090A0

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577bda;
/* rgb */ color: rgb(87, 123, 218);
/* oklch */ color: oklch(60.2% 0.150 266.4);

Tailwind

colors: {
  custom: {
    50: '#91a0e6',
    500: '#577bda',
    950: '#000000',
  },
}

SCSS

$custom: #577bda;
$custom-light: #91a0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#577bda",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 218
  },
  "hsl": {
    "h": 223.511,
    "s": 63.902,
    "l": 59.804
  },
  "oklch": {
    "l": 0.6024,
    "c": 0.15017,
    "h": 266.4
  },
  "luminance": 0.21254
}

Semantic roles & 50–950 ramp

primary

#577BDA

secondary

#E0D2AD

accent

#B941E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BDA

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

Preview Lab → · Contrast checker → · Palette generator →