#577BD2#577BD2

#577BD2 is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.8% C 0.139 H 265.5°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#577BD2
RGB	rgb(87, 123, 210)
HSL	hsl(222, 58%, 58%)
HSV	hsv(222, 59%, 82%)
CMYK	cmyk(58.6%, 41.4%, 0%, 17.6%)
CIE-LAB	lab(52.78, 13.50, -48.77)
CIE-LCH	lch(52.78, 50.60, 285.47°)
OKLab	oklab(59.75% -0.011 -0.1387)
OKLCH	oklch(59.75% 0.139 265.5)
XYZ	xyz(22.6423, 20.8434, 63.7903)
Luminance	0.2084 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BD2 #D2AE57

analogous

#57B8D2 #577BD2 #7057D2

triadic

#577BD2 #D2577B #7BD257

tetradic

#577BD2 #D257B8 #D2AE57 #57D270

square

#577BD2 #D257B8 #D2AE57 #57D270

split-complementary

#577BD2 #D27057 #B8D257

monochromatic

#25428A #325ABA #577BD2 #87A1DF #B8C7EC

Accessibility & contrast

On white

4.06

#577BD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#577BD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BD2

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BD2	#FFFFFF	#000000	##000000
##577BD2	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5584D5

Deuteranopia (green-blind)

#4479D0

Tritanopia (blue-blind)

#008E9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577bd2;
/* rgb */ color: rgb(87, 123, 210);
/* oklch */ color: oklch(59.8% 0.139 265.5);

Tailwind

colors: {
  custom: {
    50: '#90a0e0',
    500: '#577bd2',
    950: '#000000',
  },
}

SCSS

$custom: #577bd2;
$custom-light: #90a0e0;
$custom-dark: #000000;

JSON

{
  "hex": "#577bd2",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 210
  },
  "hsl": {
    "h": 222.439,
    "s": 57.746,
    "l": 58.235
  },
  "oklch": {
    "l": 0.59752,
    "c": 0.13913,
    "h": 265.5
  },
  "luminance": 0.20845
}

Semantic roles & 50–950 ramp

primary

#577BD2

secondary

#DBCDAA

accent

#B447E1

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577BD2

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

Preview Lab → · Contrast checker → · Palette generator →