#6389EB#6389EB

#6389EB is a light, vivid blue. Relative luminance 0.265; OKLCH L 64.8% C 0.153 H 266.3°. Best body text is #000000 at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#6389EB
RGB	rgb(99, 137, 235)
HSL	hsl(223, 77%, 65%)
HSV	hsv(223, 58%, 92%)
CMYK	cmyk(57.9%, 41.7%, 0%, 7.8%)
CIE-LAB	lab(58.55, 15.60, -53.56)
CIE-LCH	lch(58.55, 55.79, 286.24°)
OKLab	oklab(64.8% -0.0099 -0.1524)
OKLCH	oklch(64.8% 0.153 266.3)
XYZ	xyz(29.0816, 26.5398, 82.1713)
Luminance	0.2654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6389EB #EBC563

analogous

#63CDEB #6389EB #8163EB

triadic

#6389EB #EB6389 #89EB63

tetradic

#6389EB #EB63CD #EBC563 #63EB81

square

#6389EB #EB63CD #EBC563 #63EB81

split-complementary

#6389EB #EB8163 #CDEB63

monochromatic

#1846BC #2D60E4 #6389EB #99B2F2 #CFDBF9

Accessibility & contrast

On white

3.33

#6389EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.31

#6389EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6389EB

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6389EB	#FFFFFF	#000000	##000000
##6389EB	1.00	3.33	6.31	6.31
#FFFFFF	3.33	1.00	21.00	21.00
#000000	6.31	21.00	1.00	1.00
##000000	6.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E93EF

Deuteranopia (green-blind)

#4C87E9

Tritanopia (blue-blind)

#009FAF

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #6389eb;
/* rgb */ color: rgb(99, 137, 235);
/* oklch */ color: oklch(64.8% 0.153 266.3);

Tailwind

colors: {
  custom: {
    50: '#99abf2',
    500: '#6389eb',
    950: '#000000',
  },
}

SCSS

$custom: #6389eb;
$custom-light: #99abf2;
$custom-dark: #000000;

JSON

{
  "hex": "#6389eb",
  "rgb": {
    "r": 99,
    "g": 137,
    "b": 235
  },
  "hsl": {
    "h": 223.235,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.64803,
    "c": 0.15269,
    "h": 266.3
  },
  "luminance": 0.26542
}

Semantic roles & 50–950 ramp

primary

#6389EB

secondary

#ECDFBE

accent

#A00CDA

background

#FAFAFE

surface

#F3F4FD

border

#CDCED5

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #6389EB

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

Preview Lab → · Contrast checker → · Palette generator →