#555BC9#555BC9

#555BC9 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 52.6% C 0.168 H 276.6°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#555BC9
RGB	rgb(85, 91, 201)
HSL	hsl(237, 52%, 56%)
HSV	hsv(237, 58%, 79%)
CMYK	cmyk(57.7%, 54.7%, 0%, 21.2%)
CIE-LAB	lab(43.70, 29.96, -58.20)
CIE-LCH	lch(43.70, 65.46, 297.24°)
OKLab	oklab(52.65% 0.0193 -0.1668)
OKLCH	oklch(52.65% 0.168 276.6)
XYZ	xyz(18.0266, 13.6292, 56.9278)
Luminance	0.1363 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555BC9 #C9C355

analogous

#5595C9 #555BC9 #8955C9

triadic

#555BC9 #C9555B #5BC955

tetradic

#555BC9 #C95595 #C9C355 #55C989

square

#555BC9 #C95595 #C9C355 #55C989

split-complementary

#555BC9 #C98955 #95C955

monochromatic

#272C7C #363CAB #555BC9 #8388D8 #B2B5E7

Accessibility & contrast

On white

5.64

#555BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#555BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555BC9

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555BC9	#FFFFFF	#000000	##FFFFFF
##555BC9	1.00	5.64	3.73	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E6CCD

Deuteranopia (green-blind)

#0063C7

Tritanopia (blue-blind)

#057589

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555bc9;
/* rgb */ color: rgb(85, 91, 201);
/* oklch */ color: oklch(52.6% 0.168 276.6);

Tailwind

colors: {
  custom: {
    50: '#8f89da',
    500: '#555bc9',
    950: '#000000',
  },
}

SCSS

$custom: #555bc9;
$custom-light: #8f89da;
$custom-dark: #000000;

JSON

{
  "hex": "#555bc9",
  "rgb": {
    "r": 85,
    "g": 91,
    "b": 201
  },
  "hsl": {
    "h": 236.897,
    "s": 51.786,
    "l": 56.078
  },
  "oklch": {
    "l": 0.52646,
    "c": 0.16791,
    "h": 276.6
  },
  "luminance": 0.13631
}

Semantic roles & 50–950 ramp

primary

#555BC9

secondary

#D5D2A5

accent

#D44DDB

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0D0B15

muted

#7E7C83

Preview Lab

Preview with #555BC9

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

Preview Lab → · Contrast checker → · Palette generator →