#557DD1#557DD1

#557DD1 is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.0% C 0.136 H 263.6°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#557DD1
RGB	rgb(85, 125, 209)
HSL	hsl(221, 57%, 58%)
HSV	hsv(221, 59%, 82%)
CMYK	cmyk(59.3%, 40.2%, 0%, 18%)
CIE-LAB	lab(53.17, 11.55, -47.59)
CIE-LCH	lch(53.17, 48.97, 283.65°)
OKLab	oklab(60.01% -0.0152 -0.1352)
OKLCH	oklch(60.01% 0.136 263.6)
XYZ	xyz(22.5846, 21.2001, 63.2111)
Luminance	0.2120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DD1 #D1A955

analogous

#55BBD1 #557DD1 #6B55D1

triadic

#557DD1 #D1557D #7DD155

tetradic

#557DD1 #D155BB #D1A955 #55D16B

square

#557DD1 #D155BB #D1A955 #55D16B

split-complementary

#557DD1 #D16B55 #BBD155

monochromatic

#254487 #325DB7 #557DD1 #85A2DE #B5C7EB

Accessibility & contrast

On white

4.01

#557DD1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#557DD1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DD1

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DD1	#FFFFFF	#000000	##000000
##557DD1	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5985D4

Deuteranopia (green-blind)

#487ACF

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #557dd1;
/* rgb */ color: rgb(85, 125, 209);
/* oklch */ color: oklch(60.0% 0.136 263.6);

Tailwind

colors: {
  custom: {
    50: '#8fa2df',
    500: '#557dd1',
    950: '#000000',
  },
}

SCSS

$custom: #557dd1;
$custom-light: #8fa2df;
$custom-dark: #000000;

JSON

{
  "hex": "#557dd1",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 209
  },
  "hsl": {
    "h": 220.645,
    "s": 57.407,
    "l": 57.647
  },
  "oklch": {
    "l": 0.60007,
    "c": 0.1361,
    "h": 263.6
  },
  "luminance": 0.21202
}

Semantic roles & 50–950 ramp

primary

#557DD1

secondary

#DACAA8

accent

#AF47E1

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #557DD1

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

Preview Lab → · Contrast checker → · Palette generator →