#555EB9#555EB9

#555EB9 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 52.1% C 0.142 H 276.1°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#555EB9
RGB	rgb(85, 94, 185)
HSL	hsl(235, 42%, 53%)
HSV	hsv(235, 54%, 73%)
CMYK	cmyk(54.1%, 49.2%, 0%, 27.5%)
CIE-LAB	lab(43.42, 22.84, -49.36)
CIE-LCH	lch(43.42, 54.39, 294.83°)
OKLab	oklab(52.1% 0.015 -0.1408)
OKLCH	oklch(52.1% 0.142 276.1)
XYZ	xyz(16.5032, 13.4384, 47.6138)
Luminance	0.1344 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555EB9 #B9B055

analogous

#5590B9 #555EB9 #7E55B9

triadic

#555EB9 #B9555E #5EB955

tetradic

#555EB9 #B95590 #B9B055 #55B97E

square

#555EB9 #B95590 #B9B055 #55B97E

split-complementary

#555EB9 #B97E55 #90B955

monochromatic

#2B3169 #3D4594 #555EB9 #8087CB #ACB0DD

Accessibility & contrast

On white

5.69

#555EB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#555EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555EB9

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555EB9	#FFFFFF	#000000	##FFFFFF
##555EB9	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#326BBC

Deuteranopia (green-blind)

#2663B7

Tritanopia (blue-blind)

#257283

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555eb9;
/* rgb */ color: rgb(85, 94, 185);
/* oklch */ color: oklch(52.1% 0.142 276.1);

Tailwind

colors: {
  custom: {
    50: '#8c8bce',
    500: '#555eb9',
    950: '#000000',
  },
}

SCSS

$custom: #555eb9;
$custom-light: #8c8bce;
$custom-dark: #000000;

JSON

{
  "hex": "#555eb9",
  "rgb": {
    "r": 85,
    "g": 94,
    "b": 185
  },
  "hsl": {
    "h": 234.6,
    "s": 41.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.52101,
    "c": 0.14157,
    "h": 276.1
  },
  "luminance": 0.13439
}

Semantic roles & 50–950 ramp

primary

#555EB9

secondary

#CBC79F

accent

#C656D1

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #555EB9

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

Preview Lab → · Contrast checker → · Palette generator →