#555CB0#555CB0

#555CB0 is a mid, vivid blue. Relative luminance 0.127; OKLCH L 51.1% C 0.131 H 277.1°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#555CB0
RGB	rgb(85, 92, 176)
HSL	hsl(235, 37%, 51%)
HSV	hsv(235, 52%, 69%)
CMYK	cmyk(51.7%, 47.7%, 0%, 31%)
CIE-LAB	lab(42.34, 21.17, -45.82)
CIE-LCH	lch(42.34, 50.48, 294.80°)
OKLab	oklab(51.11% 0.0162 -0.1304)
OKLCH	oklch(51.11% 0.131 277.1)
XYZ	xyz(15.4075, 12.7192, 42.7091)
Luminance	0.1272 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555CB0 #B0A955

analogous

#5589B0 #555CB0 #7B55B0

triadic

#555CB0 #B0555C #5CB055

tetradic

#555CB0 #B05589 #B0A955 #55B07B

square

#555CB0 #B05589 #B0A955 #55B07B

split-complementary

#555CB0 #B07B55 #89B055

monochromatic

#2C305F #3F4588 #555CB0 #7F84C3 #A9ACD7

Accessibility & contrast

On white

5.93

#555CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#555CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555CB0

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555CB0	#FFFFFF	#000000	##FFFFFF
##555CB0	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3668B3

Deuteranopia (green-blind)

#2D60AE

Tritanopia (blue-blind)

#2F6E7D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #555cb0;
/* rgb */ color: rgb(85, 92, 176);
/* oklch */ color: oklch(51.1% 0.131 277.1);

Tailwind

colors: {
  custom: {
    50: '#8b8ac8',
    500: '#555cb0',
    950: '#000000',
  },
}

SCSS

$custom: #555cb0;
$custom-light: #8b8ac8;
$custom-dark: #000000;

JSON

{
  "hex": "#555cb0",
  "rgb": {
    "r": 85,
    "g": 92,
    "b": 176
  },
  "hsl": {
    "h": 235.385,
    "s": 36.546,
    "l": 51.176
  },
  "oklch": {
    "l": 0.51106,
    "c": 0.13141,
    "h": 277.1
  },
  "luminance": 0.1272
}

Semantic roles & 50–950 ramp

primary

#555CB0

secondary

#C5C19C

accent

#C45BCD

background

#F8F8FC

surface

#F0F0F8

border

#CBCBD1

text

#0C0B13

muted

#7D7C82

Preview Lab

Preview with #555CB0

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

Preview Lab → · Contrast checker → · Palette generator →