#556DDB#556DDB

#556DDB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.4% C 0.169 H 270.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#556DDB
RGB	rgb(85, 109, 219)
HSL	hsl(229, 65%, 60%)
HSV	hsv(229, 61%, 86%)
CMYK	cmyk(61.2%, 50.2%, 0%, 14.1%)
CIE-LAB	lab(49.47, 24.77, -59.16)
CIE-LCH	lch(49.47, 64.14, 292.72°)
OKLab	oklab(57.37% 0.0027 -0.1694)
OKLCH	oklch(57.37% 0.169 270.9)
XYZ	xyz(21.9969, 17.9812, 69.3156)
Luminance	0.1798 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556DDB #DBC355

analogous

#55B0DB #556DDB #8055DB

triadic

#556DDB #DB556D #6DDB55

tetradic

#556DDB #DB55B0 #DBC355 #55DB80

square

#556DDB #DB55B0 #DBC355 #55DB80

split-complementary

#556DDB #DB8055 #B0DB55

monochromatic

#203596 #2A47C8 #556DDB #8898E6 #BAC4F0

Accessibility & contrast

On white

4.57

#556DDB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#556DDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #556DDB

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556DDB	#FFFFFF	#000000	##000000
##556DDB	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#307CDF

Deuteranopia (green-blind)

#0B70D9

Tritanopia (blue-blind)

#00869A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #556ddb;
/* rgb */ color: rgb(85, 109, 219);
/* oklch */ color: oklch(57.4% 0.169 270.9);

Tailwind

colors: {
  custom: {
    50: '#9196e7',
    500: '#556ddb',
    950: '#000000',
  },
}

SCSS

$custom: #556ddb;
$custom-light: #9196e7;
$custom-dark: #000000;

JSON

{
  "hex": "#556ddb",
  "rgb": {
    "r": 85,
    "g": 109,
    "b": 219
  },
  "hsl": {
    "h": 229.254,
    "s": 65.049,
    "l": 59.608
  },
  "oklch": {
    "l": 0.57371,
    "c": 0.16947,
    "h": 270.9
  },
  "luminance": 0.17983
}

Semantic roles & 50–950 ramp

primary

#556DDB

secondary

#E0D7AC

accent

#CA40E8

background

#F9F9FE

surface

#F2F1FC

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556DDB

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

Preview Lab → · Contrast checker → · Palette generator →