#577DCA#577DCA

#577DCA is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.7% C 0.126 H 263.2°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#577DCA
RGB	rgb(87, 125, 202)
HSL	hsl(220, 52%, 57%)
HSV	hsv(220, 57%, 79%)
CMYK	cmyk(56.9%, 38.1%, 0%, 20.8%)
CIE-LAB	lab(52.90, 9.64, -44.03)
CIE-LCH	lch(52.90, 45.07, 282.35°)
OKLab	oklab(59.71% -0.0148 -0.1248)
OKLCH	oklch(59.71% 0.126 263.2)
XYZ	xyz(21.9211, 20.9560, 58.7554)
Luminance	0.2096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DCA #CAA457

analogous

#57B7CA #577DCA #6B57CA

triadic

#577DCA #CA577D #7DCA57

tetradic

#577DCA #CA57B7 #CAA457 #57CA6B

square

#577DCA #CA57B7 #CAA457 #57CA6B

split-complementary

#577DCA #CA6B57 #B7CA57

monochromatic

#28457F #375EAD #577DCA #86A1D9 #B4C5E7

Accessibility & contrast

On white

4.04

#577DCA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#577DCA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DCA

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DCA	#FFFFFF	#000000	##000000
##577DCA	1.00	4.04	5.19	5.19
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D84CD

Deuteranopia (green-blind)

#4E79C8

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577dca;
/* rgb */ color: rgb(87, 125, 202);
/* oklch */ color: oklch(59.7% 0.126 263.2);

Tailwind

colors: {
  custom: {
    50: '#8fa2da',
    500: '#577dca',
    950: '#000000',
  },
}

SCSS

$custom: #577dca;
$custom-light: #8fa2da;
$custom-dark: #000000;

JSON

{
  "hex": "#577dca",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 202
  },
  "hsl": {
    "h": 220.174,
    "s": 52.036,
    "l": 56.667
  },
  "oklch": {
    "l": 0.59708,
    "c": 0.12568,
    "h": 263.2
  },
  "luminance": 0.20958
}

Semantic roles & 50–950 ramp

primary

#577DCA

secondary

#D6C6A7

accent

#AC4CDB

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577DCA

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

Preview Lab → · Contrast checker → · Palette generator →