#577FDA#577FDA

#577FDA is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.1% C 0.145 H 264.6°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#577FDA
RGB	rgb(87, 127, 218)
HSL	hsl(222, 64%, 60%)
HSV	hsv(222, 60%, 85%)
CMYK	cmyk(60.1%, 41.7%, 0%, 14.5%)
CIE-LAB	lab(54.31, 13.73, -50.85)
CIE-LCH	lch(54.31, 52.67, 285.11°)
OKLab	oklab(61.07% -0.0137 -0.1448)
OKLCH	oklch(61.07% 0.145 264.6)
XYZ	xyz(24.1704, 22.2649, 69.3399)
Luminance	0.2227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FDA #DAB257

analogous

#57C1DA #577FDA #7057DA

triadic

#577FDA #DA577F #7FDA57

tetradic

#577FDA #DA57C1 #DAB257 #57DA70

square

#577FDA #DA57C1 #DAB257 #57DA70

split-complementary

#577FDA #DA7057 #C1DA57

monochromatic

#214596 #2C5CC8 #577FDA #89A5E5 #BBCBF0

Accessibility & contrast

On white

3.85

#577FDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#577FDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FDA

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FDA	#FFFFFF	#000000	##000000
##577FDA	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5788DE

Deuteranopia (green-blind)

#447CD8

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fda;
/* rgb */ color: rgb(87, 127, 218);
/* oklch */ color: oklch(61.1% 0.145 264.6);

Tailwind

colors: {
  custom: {
    50: '#91a3e6',
    500: '#577fda',
    950: '#000000',
  },
}

SCSS

$custom: #577fda;
$custom-light: #91a3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#577fda",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 218
  },
  "hsl": {
    "h": 221.679,
    "s": 63.902,
    "l": 59.804
  },
  "oklch": {
    "l": 0.61072,
    "c": 0.1454,
    "h": 264.6
  },
  "luminance": 0.22267
}

Semantic roles & 50–950 ramp

primary

#577FDA

secondary

#E0D0AD

accent

#B441E7

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FDA

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

Preview Lab → · Contrast checker → · Palette generator →