#577BDF#577BDF

#577BDF is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.6% C 0.157 H 266.8°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#577BDF
RGB	rgb(87, 123, 223)
HSL	hsl(224, 68%, 61%)
HSV	hsv(224, 61%, 87%)
CMYK	cmyk(61%, 44.8%, 0%, 12.5%)
CIE-LAB	lab(53.51, 17.84, -54.93)
CIE-LCH	lch(53.51, 57.76, 288.00°)
OKLab	oklab(60.55% -0.0087 -0.1568)
OKLCH	oklch(60.55% 0.157 266.8)
XYZ	xyz(24.3282, 21.5178, 72.6690)
Luminance	0.2152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BDF #DFBB57

analogous

#57BFDF #577BDF #7757DF

triadic

#577BDF #DF577B #7BDF57

tetradic

#577BDF #DF57BF #DFBB57 #57DF77

square

#577BDF #DF57BF #DFBB57 #57DF77

split-complementary

#577BDF #DF7757 #BFDF57

monochromatic

#1E409E #2855D1 #577BDF #8AA3E9 #BECCF3

Accessibility & contrast

On white

3.96

#577BDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#577BDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BDF

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BDF	#FFFFFF	#000000	##000000
##577BDF	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C86E3

Deuteranopia (green-blind)

#367ADD

Tritanopia (blue-blind)

#0092A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577bdf;
/* rgb */ color: rgb(87, 123, 223);
/* oklch */ color: oklch(60.6% 0.157 266.8);

Tailwind

colors: {
  custom: {
    50: '#92a0e9',
    500: '#577bdf',
    950: '#000000',
  },
}

SCSS

$custom: #577bdf;
$custom-light: #92a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577bdf",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 223
  },
  "hsl": {
    "h": 224.118,
    "s": 68,
    "l": 60.784
  },
  "oklch": {
    "l": 0.60553,
    "c": 0.15703,
    "h": 266.8
  },
  "luminance": 0.2152
}

Semantic roles & 50–950 ramp

primary

#577BDF

secondary

#E3D5AF

accent

#9F16D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BDF

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

Preview Lab → · Contrast checker → · Palette generator →