#5B5FCF#5B5FCF

#5B5FCF is a mid, vivid blue. Relative luminance 0.149; OKLCH L 54.2% C 0.170 H 277.6°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#5B5FCF
RGB	rgb(91, 95, 207)
HSL	hsl(238, 55%, 58%)
HSV	hsv(238, 56%, 81%)
CMYK	cmyk(56%, 54.1%, 0%, 18.8%)
CIE-LAB	lab(45.51, 30.58, -58.69)
CIE-LCH	lch(45.51, 66.18, 297.52°)
OKLab	oklab(54.24% 0.0224 -0.1681)
OKLCH	oklch(54.24% 0.17 277.6)
XYZ	xyz(19.6655, 14.9122, 60.8615)
Luminance	0.1491 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B5FCF #CFCB5B

analogous

#5B99CF #5B5FCF #915BCF

triadic

#5B5FCF #CF5B5F #5FCF5B

tetradic

#5B5FCF #CF5B99 #CFCB5B #5BCF91

square

#5B5FCF #CF5B99 #CFCB5B #5BCF91

split-complementary

#5B5FCF #CF915B #99CF5B

monochromatic

#282B88 #363AB7 #5B5FCF #8A8DDD #BABBEB

Accessibility & contrast

On white

5.27

#5B5FCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#5B5FCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #5B5FCF

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B5FCF	#FFFFFF	#000000	##FFFFFF
##5B5FCF	1.00	5.27	3.98	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1771D3

Deuteranopia (green-blind)

#0067CD

Tritanopia (blue-blind)

#1B798E

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #5b5fcf;
/* rgb */ color: rgb(91, 95, 207);
/* oklch */ color: oklch(54.2% 0.170 277.6);

Tailwind

colors: {
  custom: {
    50: '#938cde',
    500: '#5b5fcf',
    950: '#000000',
  },
}

SCSS

$custom: #5b5fcf;
$custom-light: #938cde;
$custom-dark: #000000;

JSON

{
  "hex": "#5b5fcf",
  "rgb": {
    "r": 91,
    "g": 95,
    "b": 207
  },
  "hsl": {
    "h": 237.931,
    "s": 54.717,
    "l": 58.431
  },
  "oklch": {
    "l": 0.5424,
    "c": 0.16954,
    "h": 277.6
  },
  "luminance": 0.14914
}

Semantic roles & 50–950 ramp

primary

#5B5FCF

secondary

#DAD8AC

accent

#D94ADE

background

#F9F8FD

surface

#F2F0FB

border

#CCCBD4

text

#0E0C15

muted

#7E7D83

Preview Lab

Preview with #5B5FCF

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

Preview Lab → · Contrast checker → · Palette generator →