#577ACC#577ACC

#577ACC is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.2% C 0.132 H 265.2°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#577ACC
RGB	rgb(87, 122, 204)
HSL	hsl(222, 53%, 57%)
HSV	hsv(222, 57%, 80%)
CMYK	cmyk(57.4%, 40.2%, 0%, 20%)
CIE-LAB	lab(52.18, 12.12, -46.32)
CIE-LCH	lch(52.18, 47.88, 284.67°)
OKLab	oklab(59.18% -0.0111 -0.1315)
OKLCH	oklch(59.18% 0.132 265.2)
XYZ	xyz(21.7854, 20.3032, 59.8859)
Luminance	0.2031 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ACC #CCA957

analogous

#57B5CC #577ACC #6E57CC

triadic

#577ACC #CC577A #7ACC57

tetradic

#577ACC #CC57B5 #CCA957 #57CC6E

square

#577ACC #CC57B5 #CCA957 #57CC6E

split-complementary

#577ACC #CC6E57 #B5CC57

monochromatic

#274281 #365AB0 #577ACC #869FDA #B5C4E9

Accessibility & contrast

On white

4.15

#577ACC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#577ACC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ACC

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ACC	#FFFFFF	#000000	##000000
##577ACC	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5782CF

Deuteranopia (green-blind)

#4878CA

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577acc;
/* rgb */ color: rgb(87, 122, 204);
/* oklch */ color: oklch(59.2% 0.132 265.2);

Tailwind

colors: {
  custom: {
    50: '#8fa0dc',
    500: '#577acc',
    950: '#000000',
  },
}

SCSS

$custom: #577acc;
$custom-light: #8fa0dc;
$custom-dark: #000000;

JSON

{
  "hex": "#577acc",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 204
  },
  "hsl": {
    "h": 222.051,
    "s": 53.425,
    "l": 57.059
  },
  "oklch": {
    "l": 0.59184,
    "c": 0.13199,
    "h": 265.2
  },
  "luminance": 0.20305
}

Semantic roles & 50–950 ramp

primary

#577ACC

secondary

#D7C9A8

accent

#B14BDD

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577ACC

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

Preview Lab → · Contrast checker → · Palette generator →