#5B91DD#5B91DD

#5B91DD is a light, vivid blue. Relative luminance 0.277; OKLCH L 65.3% C 0.128 H 257.1°. Best body text is #000000 at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#5B91DD
RGB	rgb(91, 145, 221)
HSL	hsl(215, 66%, 61%)
HSV	hsv(215, 59%, 87%)
CMYK	cmyk(58.8%, 34.4%, 0%, 13.3%)
CIE-LAB	lab(59.61, 4.74, -44.11)
CIE-LCH	lch(59.61, 44.37, 276.13°)
OKLab	oklab(65.29% -0.0285 -0.1248)
OKLCH	oklch(65.29% 0.128 257.1)
XYZ	xyz(27.4863, 27.6930, 72.2894)
Luminance	0.2769 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B91DD #DDA75B

analogous

#5BD2DD #5B91DD #665BDD

triadic

#5B91DD #DD5B91 #91DD5B

tetradic

#5B91DD #DD5BD2 #DDA75B #5BDD66

square

#5B91DD #DD5BD2 #DDA75B #5BDD66

split-complementary

#5B91DD #DD665B #D2DD5B

monochromatic

#21549D #2B6FD0 #5B91DD #8EB3E8 #C0D5F2

Accessibility & contrast

On white

3.21

#5B91DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.54

#5B91DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B91DD

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B91DD	#FFFFFF	#000000	##000000
##5B91DD	1.00	3.21	6.54	6.54
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.54	21.00	1.00	1.00
##000000	6.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7196E0

Deuteranopia (green-blind)

#608ADB

Tritanopia (blue-blind)

#00A2AD

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #5b91dd;
/* rgb */ color: rgb(91, 145, 221);
/* oklch */ color: oklch(65.3% 0.128 257.1);

Tailwind

colors: {
  custom: {
    50: '#93b0e8',
    500: '#5b91dd',
    950: '#000000',
  },
}

SCSS

$custom: #5b91dd;
$custom-light: #93b0e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5b91dd",
  "rgb": {
    "r": 91,
    "g": 145,
    "b": 221
  },
  "hsl": {
    "h": 215.077,
    "s": 65.657,
    "l": 61.176
  },
  "oklch": {
    "l": 0.65287,
    "c": 0.12801,
    "h": 257.1
  },
  "luminance": 0.27695
}

Semantic roles & 50–950 ramp

primary

#5B91DD

secondary

#E2CEB1

accent

#8218CE

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #5B91DD

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

Preview Lab → · Contrast checker → · Palette generator →