#557DCD#557DCD

#557DCD is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.8% C 0.131 H 263.0°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#557DCD
RGB	rgb(85, 125, 205)
HSL	hsl(220, 55%, 57%)
HSV	hsv(220, 59%, 80%)
CMYK	cmyk(58.5%, 39%, 0%, 19.6%)
CIE-LAB	lab(52.95, 10.22, -45.66)
CIE-LCH	lch(52.95, 46.79, 282.62°)
OKLab	oklab(59.77% -0.016 -0.1296)
OKLCH	oklch(59.77% 0.131 263)
XYZ	xyz(22.0956, 21.0045, 60.6357)
Luminance	0.2101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DCD #CDA555

analogous

#55B9CD #557DCD #6955CD

triadic

#557DCD #CD557D #7DCD55

tetradic

#557DCD #CD55B9 #CDA555 #55CD69

square

#557DCD #CD55B9 #CDA555 #55CD69

split-complementary

#557DCD #CD6955 #B9CD55

monochromatic

#264582 #345EB1 #557DCD #84A1DB #B4C5E9

Accessibility & contrast

On white

4.04

#557DCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#557DCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DCD

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DCD	#FFFFFF	#000000	##000000
##557DCD	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B84D0

Deuteranopia (green-blind)

#4B79CB

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #557dcd;
/* rgb */ color: rgb(85, 125, 205);
/* oklch */ color: oklch(59.8% 0.131 263.0);

Tailwind

colors: {
  custom: {
    50: '#8ea2dc',
    500: '#557dcd',
    950: '#000000',
  },
}

SCSS

$custom: #557dcd;
$custom-light: #8ea2dc;
$custom-dark: #000000;

JSON

{
  "hex": "#557dcd",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 205
  },
  "hsl": {
    "h": 220,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59772,
    "c": 0.13059,
    "h": 263
  },
  "luminance": 0.21006
}

Semantic roles & 50–950 ramp

primary

#557DCD

secondary

#D7C7A6

accent

#AD4ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557DCD

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

Preview Lab → · Contrast checker → · Palette generator →