#555EBB#555EBB

#555EBB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.2% C 0.144 H 276.0°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#555EBB
RGB	rgb(85, 94, 187)
HSL	hsl(235, 43%, 53%)
HSV	hsv(235, 55%, 73%)
CMYK	cmyk(54.5%, 49.7%, 0%, 26.7%)
CIE-LAB	lab(43.54, 23.49, -50.33)
CIE-LCH	lch(43.54, 55.54, 295.02°)
OKLab	oklab(52.24% 0.0152 -0.1436)
OKLCH	oklch(52.24% 0.144 276)
XYZ	xyz(16.7158, 13.5234, 48.7335)
Luminance	0.1353 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#555EBB #BBB255

analogous

#5591BB #555EBB #7F55BB

triadic

#555EBB #BB555E #5EBB55

tetradic

#555EBB #BB5591 #BBB255 #55BB7F

square

#555EBB #BB5591 #BBB255 #55BB7F

split-complementary

#555EBB #BB7F55 #91BB55

monochromatic

#2B306B #3C4497 #555EBB #8187CC #ACB1DE

Accessibility & contrast

On white

5.67

#555EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#555EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #555EBB

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##555EBB	#FFFFFF	#000000	##FFFFFF
##555EBB	1.00	5.67	3.71	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#306BBE

Deuteranopia (green-blind)

#2363B9

Tritanopia (blue-blind)

#237383

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #555ebb;
/* rgb */ color: rgb(85, 94, 187);
/* oklch */ color: oklch(52.2% 0.144 276.0);

Tailwind

colors: {
  custom: {
    50: '#8d8bd0',
    500: '#555ebb',
    950: '#000000',
  },
}

SCSS

$custom: #555ebb;
$custom-light: #8d8bd0;
$custom-dark: #000000;

JSON

{
  "hex": "#555ebb",
  "rgb": {
    "r": 85,
    "g": 94,
    "b": 187
  },
  "hsl": {
    "h": 234.706,
    "s": 42.857,
    "l": 53.333
  },
  "oklch": {
    "l": 0.52235,
    "c": 0.14442,
    "h": 276
  },
  "luminance": 0.13525
}

Semantic roles & 50–950 ramp

primary

#555EBB

secondary

#CCC8A0

accent

#C855D3

background

#F9F8FC

surface

#F1F0F9

border

#CBCBD2

text

#0D0C14

muted

#7E7D82

Preview Lab

Preview with #555EBB

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

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