#555AB4#555AB4

#555AB4 is a mid, vivid blue. Relative luminance 0.125; OKLCH L 51.0% C 0.140 H 277.8°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#555AB4
RGB	rgb(85, 90, 180)
HSL	hsl(237, 39%, 52%)
HSV	hsv(237, 53%, 71%)
CMYK	cmyk(52.8%, 50%, 0%, 29.4%)
CIE-LAB	lab(42.06, 23.73, -48.62)
CIE-LCH	lch(42.06, 54.10, 296.01°)
OKLab	oklab(50.98% 0.019 -0.1386)
OKLCH	oklch(50.98% 0.14 277.8)
XYZ	xyz(15.6381, 12.5379, 44.7672)
Luminance	0.1254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555AB4 #B4AF55

analogous

#558AB4 #555AB4 #8055B4

triadic

#555AB4 #B4555A #5AB455

tetradic

#555AB4 #B4558A #B4AF55 #55B480

square

#555AB4 #B4558A #B4AF55 #55B480

split-complementary

#555AB4 #B48055 #8AB455

monochromatic

#2C2F63 #3E438D #555AB4 #7F83C7 #AAACD9

Accessibility & contrast

On white

5.99

#555AB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#555AB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555AB4

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555AB4	#FFFFFF	#000000	##FFFFFF
##555AB4	1.00	5.99	3.51	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F67B7

Deuteranopia (green-blind)

#2460B2

Tritanopia (blue-blind)

#2B6E7E

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #555ab4;
/* rgb */ color: rgb(85, 90, 180);
/* oklch */ color: oklch(51.0% 0.140 277.8);

Tailwind

colors: {
  custom: {
    50: '#8c88cb',
    500: '#555ab4',
    950: '#000000',
  },
}

SCSS

$custom: #555ab4;
$custom-light: #8c88cb;
$custom-dark: #000000;

JSON

{
  "hex": "#555ab4",
  "rgb": {
    "r": 85,
    "g": 90,
    "b": 180
  },
  "hsl": {
    "h": 236.842,
    "s": 38.776,
    "l": 51.961
  },
  "oklch": {
    "l": 0.50975,
    "c": 0.13992,
    "h": 277.8
  },
  "luminance": 0.12539
}

Semantic roles & 50–950 ramp

primary

#555AB4

secondary

#C7C59E

accent

#C959CF

background

#F8F8FC

surface

#F0EFF8

border

#CBCAD1

text

#0D0B13

muted

#7D7C82

Preview Lab

Preview with #555AB4

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

Preview Lab → · Contrast checker → · Palette generator →