#556BDD#556BDD

#556BDD is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.175 H 271.6°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#556BDD
RGB	rgb(85, 107, 221)
HSL	hsl(230, 67%, 60%)
HSV	hsv(230, 62%, 87%)
CMYK	cmyk(61.5%, 51.6%, 0%, 13.3%)
CIE-LAB	lab(49.09, 26.68, -60.92)
CIE-LCH	lch(49.09, 66.51, 293.65°)
OKLab	oklab(57.12% 0.0048 -0.1746)
OKLCH	oklch(57.12% 0.175 271.6)
XYZ	xyz(22.0508, 17.6653, 70.6403)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BDD #DDC755

analogous

#55AFDD #556BDD #8355DD

triadic

#556BDD #DD556B #6BDD55

tetradic

#556BDD #DD55AF #DDC755 #55DD83

square

#556BDD #DD55AF #DDC755 #55DD83

split-complementary

#556BDD #DD8355 #AFDD55

monochromatic

#1F3299 #2943CC #556BDD #8897E7 #BBC4F1

Accessibility & contrast

On white

4.63

#556BDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#556BDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #556BDD

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BDD	#FFFFFF	#000000	##FFFFFF
##556BDD	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#277BE1

Deuteranopia (green-blind)

#006FDB

Tritanopia (blue-blind)

#00859A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #556bdd;
/* rgb */ color: rgb(85, 107, 221);
/* oklch */ color: oklch(57.1% 0.175 271.6);

Tailwind

colors: {
  custom: {
    50: '#9195e8',
    500: '#556bdd',
    950: '#000000',
  },
}

SCSS

$custom: #556bdd;
$custom-light: #9195e8;
$custom-dark: #000000;

JSON

{
  "hex": "#556bdd",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 221
  },
  "hsl": {
    "h": 230.294,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.57121,
    "c": 0.1747,
    "h": 271.6
  },
  "luminance": 0.17667
}

Semantic roles & 50–950 ramp

primary

#556BDD

secondary

#E1D9AD

accent

#CE3EEA

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556BDD

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

Preview Lab → · Contrast checker → · Palette generator →