#577FCE#577FCE

#577FCE is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.4% C 0.129 H 262.8°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#577FCE
RGB	rgb(87, 127, 206)
HSL	hsl(220, 55%, 57%)
HSV	hsv(220, 58%, 81%)
CMYK	cmyk(57.8%, 38.3%, 0%, 19.2%)
CIE-LAB	lab(53.66, 9.74, -45.09)
CIE-LCH	lch(53.66, 46.14, 282.19°)
OKLab	oklab(60.37% -0.0161 -0.1279)
OKLCH	oklch(60.37% 0.129 262.8)
XYZ	xyz(22.6566, 21.6593, 61.3673)
Luminance	0.2166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FCE #CEA657

analogous

#57BBCE #577FCE #6A57CE

triadic

#577FCE #CE577F #7FCE57

tetradic

#577FCE #CE57BB #CEA657 #57CE6A

square

#577FCE #CE57BB #CEA657 #57CE6A

split-complementary

#577FCE #CE6A57 #BBCE57

monochromatic

#274684 #345FB3 #577FCE #86A3DC #B6C7EA

Accessibility & contrast

On white

3.94

#577FCE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#577FCE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FCE

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FCE	#FFFFFF	#000000	##000000
##577FCE	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E86D1

Deuteranopia (green-blind)

#4E7BCC

Tritanopia (blue-blind)

#00919C

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fce;
/* rgb */ color: rgb(87, 127, 206);
/* oklch */ color: oklch(60.4% 0.129 262.8);

Tailwind

colors: {
  custom: {
    50: '#8fa3dd',
    500: '#577fce',
    950: '#000000',
  },
}

SCSS

$custom: #577fce;
$custom-light: #8fa3dd;
$custom-dark: #000000;

JSON

{
  "hex": "#577fce",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 206
  },
  "hsl": {
    "h": 219.832,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.60366,
    "c": 0.1289,
    "h": 262.8
  },
  "luminance": 0.21661
}

Semantic roles & 50–950 ramp

primary

#577FCE

secondary

#D8C8A8

accent

#AC4ADE

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FCE

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

Preview Lab → · Contrast checker → · Palette generator →