#5B81FA#5B81FA

#5B81FA is a light, vivid blue. Relative luminance 0.248; OKLCH L 63.7% C 0.185 H 267.8°. Best body text is #000000 at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#5B81FA
RGB	rgb(91, 129, 250)
HSL	hsl(226, 94%, 67%)
HSV	hsv(226, 64%, 98%)
CMYK	cmyk(63.6%, 48.4%, 0%, 2%)
CIE-LAB	lab(56.90, 23.96, -64.52)
CIE-LCH	lch(56.90, 68.82, 290.38°)
OKLab	oklab(63.72% -0.0072 -0.1848)
OKLCH	oklch(63.72% 0.185 267.8)
XYZ	xyz(29.4141, 24.8241, 93.6654)
Luminance	0.2483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B81FA #FAD45B

analogous

#5BD1FA #5B81FA #845BFA

triadic

#5B81FA #FA5B81 #81FA5B

tetradic

#5B81FA #FA5BD1 #FAD45B #5BFA84

square

#5B81FA #FA5BD1 #FAD45B #5BFA84

split-complementary

#5B81FA #FA845B #D1FA5B

monochromatic

#0638D4 #2053F8 #5B81FA #96AFFC #D2DCFE

Accessibility & contrast

On white

3.52

#5B81FA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.97

#5B81FA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B81FA

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B81FA	#FFFFFF	#000000	##000000
##5B81FA	1.00	3.52	5.97	5.97
#FFFFFF	3.52	1.00	21.00	21.00
#000000	5.97	21.00	1.00	1.00
##000000	5.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4090FE

Deuteranopia (green-blind)

#1982F8

Tritanopia (blue-blind)

#009DB2

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #5b81fa;
/* rgb */ color: rgb(91, 129, 250);
/* oklch */ color: oklch(63.7% 0.185 267.8);

Tailwind

colors: {
  custom: {
    50: '#98a5fd',
    500: '#5b81fa',
    950: '#000000',
  },
}

SCSS

$custom: #5b81fa;
$custom-light: #98a5fd;
$custom-dark: #000000;

JSON

{
  "hex": "#5b81fa",
  "rgb": {
    "r": 91,
    "g": 129,
    "b": 250
  },
  "hsl": {
    "h": 225.66,
    "s": 94.083,
    "l": 66.863
  },
  "oklch": {
    "l": 0.63716,
    "c": 0.18495,
    "h": 267.8
  },
  "luminance": 0.24827
}

Semantic roles & 50–950 ramp

primary

#5B81FA

secondary

#F2E6BF

accent

#AF00E6

background

#FAFAFF

surface

#F3F4FF

border

#CDCED7

text

#0F0F18

muted

#7F7F86

Preview Lab

Preview with #5B81FA

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

Preview Lab → · Contrast checker → · Palette generator →