#556BE4#556BE4

#556BE4 is a mid, vivid blue. Relative luminance 0.180; OKLCH L 57.6% C 0.184 H 271.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#556BE4
RGB	rgb(85, 107, 228)
HSL	hsl(231, 73%, 61%)
HSV	hsv(231, 63%, 89%)
CMYK	cmyk(62.7%, 53.1%, 0%, 10.6%)
CIE-LAB	lab(49.55, 29.04, -64.12)
CIE-LCH	lch(49.55, 70.39, 294.36°)
OKLab	oklab(57.62% 0.0053 -0.1841)
OKLCH	oklch(57.62% 0.184 271.7)
XYZ	xyz(23.0029, 18.0461, 75.6548)
Luminance	0.1805 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556BE4 #E4CE55

analogous

#55B3E4 #556BE4 #8755E4

triadic

#556BE4 #E4556B #6BE455

tetradic

#556BE4 #E455B3 #E4CE55 #55E487

square

#556BE4 #E455B3 #E4CE55 #55E487

split-complementary

#556BE4 #E48755 #B3E455

monochromatic

#1A2FA4 #233FD9 #556BE4 #8A99EC #BFC7F5

Accessibility & contrast

On white

4.56

#556BE4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#556BE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #556BE4

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556BE4	#FFFFFF	#000000	##000000
##556BE4	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#197CE8

Deuteranopia (green-blind)

#0070E2

Tritanopia (blue-blind)

#00889D

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #556be4;
/* rgb */ color: rgb(85, 107, 228);
/* oklch */ color: oklch(57.6% 0.184 271.7);

Tailwind

colors: {
  custom: {
    50: '#9295ed',
    500: '#556be4',
    950: '#000000',
  },
}

SCSS

$custom: #556be4;
$custom-light: #9295ed;
$custom-dark: #000000;

JSON

{
  "hex": "#556be4",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 228
  },
  "hsl": {
    "h": 230.769,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.57618,
    "c": 0.18414,
    "h": 271.7
  },
  "luminance": 0.18048
}

Semantic roles & 50–950 ramp

primary

#556BE4

secondary

#E5DDB0

accent

#B711D5

background

#F9F9FE

surface

#F2F1FD

border

#CCCBD5

text

#0E0D16

muted

#7E7E84

Preview Lab

Preview with #556BE4

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

Preview Lab → · Contrast checker → · Palette generator →