#5B99F3#5B99F3

#5B99F3 is a light, vivid blue. Relative luminance 0.315; OKLCH L 68.2% C 0.148 H 257.7°. Best body text is #000000 at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#5B99F3
RGB	rgb(91, 153, 243)
HSL	hsl(216, 86%, 65%)
HSV	hsv(216, 63%, 95%)
CMYK	cmyk(62.6%, 37%, 0%, 4.7%)
CIE-LAB	lab(62.91, 7.28, -51.07)
CIE-LCH	lch(62.91, 51.59, 278.11°)
OKLab	oklab(68.21% -0.0315 -0.145)
OKLCH	oklch(68.21% 0.148 257.7)
XYZ	xyz(31.8775, 31.4747, 89.1719)
Luminance	0.3148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99F3 #F3B55B

analogous

#5BE5F3 #5B99F3 #695BF3

triadic

#5B99F3 #F35B99 #99F35B

tetradic

#5B99F3 #F35BE5 #F3B55B #5BF369

square

#5B99F3 #F35BE5 #F3B55B #5BF369

split-complementary

#5B99F3 #F3695B #E5F35B

monochromatic

#0E59C5 #2276EF #5B99F3 #94BCF7 #CDE0FB

Accessibility & contrast

On white

2.88

#5B99F3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.30

#5B99F3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5B99F3

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99F3	#FFFFFF	#000000	##000000
##5B99F3	1.00	2.88	7.30	7.30
#FFFFFF	2.88	1.00	21.00	21.00
#000000	7.30	21.00	1.00	1.00
##000000	7.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#72A0F7

Deuteranopia (green-blind)

#5D92F1

Tritanopia (blue-blind)

#00AEBA

Achromatopsia (no color)

#989898

Design tokens & code

CSS

--color: #5b99f3;
/* rgb */ color: rgb(91, 153, 243);
/* oklch */ color: oklch(68.2% 0.148 257.7);

Tailwind

colors: {
  custom: {
    50: '#96b6f7',
    500: '#5b99f3',
    950: '#000000',
  },
}

SCSS

$custom: #5b99f3;
$custom-light: #96b6f7;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99f3",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 243
  },
  "hsl": {
    "h": 215.526,
    "s": 86.364,
    "l": 65.49
  },
  "oklch": {
    "l": 0.68211,
    "c": 0.14842,
    "h": 257.7
  },
  "luminance": 0.31478
}

Semantic roles & 50–950 ramp

primary

#5B99F3

secondary

#EEDABB

accent

#8703E3

background

#F9FBFF

surface

#F2F6FF

border

#CCD0D7

text

#0F1117

muted

#7E8085

Preview Lab

Preview with #5B99F3

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

Preview Lab → · Contrast checker → · Palette generator →