#556EB4#556EB4

#556EB4 is a mid, moderate blue. Relative luminance 0.164; OKLCH L 55.1% C 0.113 H 267.7°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#556EB4
RGB	rgb(85, 110, 180)
HSL	hsl(224, 39%, 52%)
HSV	hsv(224, 53%, 71%)
CMYK	cmyk(52.8%, 38.9%, 0%, 29.4%)
CIE-LAB	lab(47.47, 11.20, -40.00)
CIE-LCH	lch(47.47, 41.54, 285.65°)
OKLab	oklab(55.1% -0.0044 -0.1132)
OKLCH	oklch(55.1% 0.113 267.7)
XYZ	xyz(17.5577, 16.3772, 45.4071)
Luminance	0.1638 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556EB4 #B49B55

analogous

#559EB4 #556EB4 #6C55B4

triadic

#556EB4 #B4556E #6EB455

tetradic

#556EB4 #B4559E #B49B55 #55B46C

square

#556EB4 #B4559E #B49B55 #55B46C

split-complementary

#556EB4 #B46C55 #9EB455

monochromatic

#2C3A63 #3E538D #556EB4 #7F92C7 #AAB6D9

Accessibility & contrast

On white

4.91

#556EB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#556EB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556EB4

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556EB4	#FFFFFF	#000000	##FFFFFF
##556EB4	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5275B7

Deuteranopia (green-blind)

#476DB2

Tritanopia (blue-blind)

#277D88

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #556eb4;
/* rgb */ color: rgb(85, 110, 180);
/* oklch */ color: oklch(55.1% 0.113 267.7);

Tailwind

colors: {
  custom: {
    50: '#8b97cb',
    500: '#556eb4',
    950: '#000000',
  },
}

SCSS

$custom: #556eb4;
$custom-light: #8b97cb;
$custom-dark: #000000;

JSON

{
  "hex": "#556eb4",
  "rgb": {
    "r": 85,
    "g": 110,
    "b": 180
  },
  "hsl": {
    "h": 224.211,
    "s": 38.776,
    "l": 51.961
  },
  "oklch": {
    "l": 0.55101,
    "c": 0.11328,
    "h": 267.7
  },
  "luminance": 0.16378
}

Semantic roles & 50–950 ramp

primary

#556EB4

secondary

#C7BC9E

accent

#B059CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0D13

muted

#7D7E82

Preview Lab

Preview with #556EB4

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

Preview Lab → · Contrast checker → · Palette generator →