#577DDA#577DDA

#577DDA is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.7% C 0.148 H 265.5°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#577DDA
RGB	rgb(87, 125, 218)
HSL	hsl(223, 64%, 60%)
HSV	hsv(223, 60%, 85%)
CMYK	cmyk(60.1%, 42.7%, 0%, 14.5%)
CIE-LAB	lab(53.76, 14.95, -51.72)
CIE-LCH	lch(53.76, 53.83, 286.12°)
OKLab	oklab(60.66% -0.0116 -0.1473)
OKLCH	oklch(60.66% 0.148 265.5)
XYZ	xyz(23.9147, 21.7534, 69.2546)
Luminance	0.2175 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DDA #DAB457

analogous

#57BFDA #577DDA #7257DA

triadic

#577DDA #DA577D #7DDA57

tetradic

#577DDA #DA57BF #DAB457 #57DA72

square

#577DDA #DA57BF #DAB457 #57DA72

split-complementary

#577DDA #DA7257 #BFDA57

monochromatic

#214396 #2C59C8 #577DDA #89A4E5 #BBCBF0

Accessibility & contrast

On white

3.92

#577DDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#577DDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DDA

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DDA	#FFFFFF	#000000	##000000
##577DDA	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5387DE

Deuteranopia (green-blind)

#407BD8

Tritanopia (blue-blind)

#0092A1

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577dda;
/* rgb */ color: rgb(87, 125, 218);
/* oklch */ color: oklch(60.7% 0.148 265.5);

Tailwind

colors: {
  custom: {
    50: '#91a2e6',
    500: '#577dda',
    950: '#000000',
  },
}

SCSS

$custom: #577dda;
$custom-light: #91a2e6;
$custom-dark: #000000;

JSON

{
  "hex": "#577dda",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 218
  },
  "hsl": {
    "h": 222.595,
    "s": 63.902,
    "l": 59.804
  },
  "oklch": {
    "l": 0.60655,
    "c": 0.14778,
    "h": 265.5
  },
  "luminance": 0.21755
}

Semantic roles & 50–950 ramp

primary

#577DDA

secondary

#E0D1AD

accent

#B741E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577DDA

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

Preview Lab → · Contrast checker → · Palette generator →