#577FDC#577FDC

#577FDC is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.2% C 0.148 H 264.8°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#577FDC
RGB	rgb(87, 127, 220)
HSL	hsl(222, 66%, 60%)
HSV	hsv(222, 60%, 86%)
CMYK	cmyk(60.5%, 42.3%, 0%, 13.7%)
CIE-LAB	lab(54.42, 14.40, -51.80)
CIE-LCH	lch(54.42, 53.76, 285.53°)
OKLab	oklab(61.19% -0.0133 -0.1475)
OKLCH	oklch(61.19% 0.148 264.8)
XYZ	xyz(24.4337, 22.3702, 70.7265)
Luminance	0.2237 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FDC #DCB457

analogous

#57C1DC #577FDC #7257DC

triadic

#577FDC #DC577F #7FDC57

tetradic

#577FDC #DC57C1 #DCB457 #57DC72

square

#577FDC #DC57C1 #DCB457 #57DC72

split-complementary

#577FDC #DC7257 #C1DC57

monochromatic

#204499 #2A5BCB #577FDC #8AA6E7 #BCCCF1

Accessibility & contrast

On white

3.84

#577FDC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#577FDC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FDC

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FDC	#FFFFFF	#000000	##000000
##577FDC	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5589E0

Deuteranopia (green-blind)

#427DDA

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fdc;
/* rgb */ color: rgb(87, 127, 220);
/* oklch */ color: oklch(61.2% 0.148 264.8);

Tailwind

colors: {
  custom: {
    50: '#91a3e7',
    500: '#577fdc',
    950: '#000000',
  },
}

SCSS

$custom: #577fdc;
$custom-light: #91a3e7;
$custom-dark: #000000;

JSON

{
  "hex": "#577fdc",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 220
  },
  "hsl": {
    "h": 221.955,
    "s": 65.517,
    "l": 60.196
  },
  "oklch": {
    "l": 0.61193,
    "c": 0.14814,
    "h": 264.8
  },
  "luminance": 0.22372
}

Semantic roles & 50–950 ramp

primary

#577FDC

secondary

#E1D2AE

accent

#9718CD

background

#F9FAFE

surface

#F2F3FC

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FDC

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

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