#556DDD#556DDD

#556DDD is a mid, vivid blue. Relative luminance 0.181; OKLCH L 57.5% C 0.172 H 271.0°. Best body text is #000000 at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#556DDD
RGB	rgb(85, 109, 221)
HSL	hsl(229, 67%, 60%)
HSV	hsv(229, 62%, 87%)
CMYK	cmyk(61.5%, 50.7%, 0%, 13.3%)
CIE-LAB	lab(49.60, 25.44, -60.09)
CIE-LCH	lch(49.60, 65.25, 292.95°)
OKLab	oklab(57.51% 0.0029 -0.1722)
OKLCH	oklch(57.51% 0.172 271)
XYZ	xyz(22.2617, 18.0872, 70.7106)
Luminance	0.1809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556DDD #DDC555

analogous

#55B1DD #556DDD #8155DD

triadic

#556DDD #DD556D #6DDD55

tetradic

#556DDD #DD55B1 #DDC555 #55DD81

square

#556DDD #DD55B1 #DDC555 #55DD81

split-complementary

#556DDD #DD8155 #B1DD55

monochromatic

#1F3499 #2946CC #556DDD #8899E7 #BBC5F1

Accessibility & contrast

On white

4.55

#556DDD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.62

#556DDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #556DDD

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556DDD	#FFFFFF	#000000	##000000
##556DDD	1.00	4.55	4.62	4.62
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.62	21.00	1.00	1.00
##000000	4.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D7CE1

Deuteranopia (green-blind)

#0070DB

Tritanopia (blue-blind)

#00879B

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #556ddd;
/* rgb */ color: rgb(85, 109, 221);
/* oklch */ color: oklch(57.5% 0.172 271.0);

Tailwind

colors: {
  custom: {
    50: '#9196e8',
    500: '#556ddd',
    950: '#000000',
  },
}

SCSS

$custom: #556ddd;
$custom-light: #9196e8;
$custom-dark: #000000;

JSON

{
  "hex": "#556ddd",
  "rgb": {
    "r": 85,
    "g": 109,
    "b": 221
  },
  "hsl": {
    "h": 229.412,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.57509,
    "c": 0.17219,
    "h": 271
  },
  "luminance": 0.18089
}

Semantic roles & 50–950 ramp

primary

#556DDD

secondary

#E1D8AD

accent

#CB3EEA

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556DDD

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

Preview Lab → · Contrast checker → · Palette generator →