#577FCF#577FCF

#577FCF is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.4% C 0.130 H 263.0°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#577FCF
RGB	rgb(87, 127, 207)
HSL	hsl(220, 56%, 58%)
HSV	hsv(220, 58%, 81%)
CMYK	cmyk(58%, 38.6%, 0%, 18.8%)
CIE-LAB	lab(53.72, 10.07, -45.58)
CIE-LCH	lch(53.72, 46.68, 282.46°)
OKLab	oklab(60.42% -0.0159 -0.1293)
OKLCH	oklch(60.42% 0.13 263)
XYZ	xyz(22.7785, 21.7081, 62.0091)
Luminance	0.2171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FCF #CFA757

analogous

#57BBCF #577FCF #6B57CF

triadic

#577FCF #CF577F #7FCF57

tetradic

#577FCF #CF57BB #CFA757 #57CF6B

square

#577FCF #CF57BB #CFA757 #57CF6B

split-complementary

#577FCF #CF6B57 #BBCF57

monochromatic

#264685 #345FB5 #577FCF #87A3DD #B6C8EA

Accessibility & contrast

On white

3.93

#577FCF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#577FCF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FCF

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FCF	#FFFFFF	#000000	##000000
##577FCF	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D86D2

Deuteranopia (green-blind)

#4E7BCD

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fcf;
/* rgb */ color: rgb(87, 127, 207);
/* oklch */ color: oklch(60.4% 0.130 263.0);

Tailwind

colors: {
  custom: {
    50: '#8fa3de',
    500: '#577fcf',
    950: '#000000',
  },
}

SCSS

$custom: #577fcf;
$custom-light: #8fa3de;
$custom-dark: #000000;

JSON

{
  "hex": "#577fcf",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 207
  },
  "hsl": {
    "h": 220,
    "s": 55.556,
    "l": 57.647
  },
  "oklch": {
    "l": 0.60424,
    "c": 0.13029,
    "h": 263
  },
  "luminance": 0.2171
}

Semantic roles & 50–950 ramp

primary

#577FCF

secondary

#D9C9A9

accent

#AD49DF

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FCF

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

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