#6389DD#6389DD

#6389DD is a light, vivid blue. Relative luminance 0.258; OKLCH L 64.0% C 0.134 H 264.5°. Best body text is #000000 at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#6389DD
RGB	rgb(99, 137, 221)
HSL	hsl(221, 64%, 63%)
HSV	hsv(221, 55%, 87%)
CMYK	cmyk(55.2%, 38%, 0%, 13.3%)
CIE-LAB	lab(57.81, 11.09, -46.93)
CIE-LCH	lch(57.81, 48.22, 283.30°)
OKLab	oklab(64% -0.0127 -0.133)
OKLCH	oklch(64% 0.134 264.5)
XYZ	xyz(27.1380, 25.7623, 71.9351)
Luminance	0.2576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6389DD #DDB763

analogous

#63C6DD #6389DD #7A63DD

triadic

#6389DD #DD6389 #89DD63

tetradic

#6389DD #DD63C6 #DDB763 #63DD7A

square

#6389DD #DD63C6 #DDB763 #63DD7A

split-complementary

#6389DD #DD7A63 #C6DD63

monochromatic

#234BA2 #3163D2 #6389DD #95AFE8 #C7D5F3

Accessibility & contrast

On white

3.41

#6389DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.15

#6389DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6389DD

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6389DD	#FFFFFF	#000000	##000000
##6389DD	1.00	3.41	6.15	6.15
#FFFFFF	3.41	1.00	21.00	21.00
#000000	6.15	21.00	1.00	1.00
##000000	6.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6691E0

Deuteranopia (green-blind)

#5786DB

Tritanopia (blue-blind)

#169BA8

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #6389dd;
/* rgb */ color: rgb(99, 137, 221);
/* oklch */ color: oklch(64.0% 0.134 264.5);

Tailwind

colors: {
  custom: {
    50: '#98abe8',
    500: '#6389dd',
    950: '#000000',
  },
}

SCSS

$custom: #6389dd;
$custom-light: #98abe8;
$custom-dark: #000000;

JSON

{
  "hex": "#6389dd",
  "rgb": {
    "r": 99,
    "g": 137,
    "b": 221
  },
  "hsl": {
    "h": 221.311,
    "s": 64.211,
    "l": 62.745
  },
  "oklch": {
    "l": 0.63997,
    "c": 0.13356,
    "h": 264.5
  },
  "luminance": 0.25764
}

Semantic roles & 50–950 ramp

primary

#6389DD

secondary

#E4D6B8

accent

#9419CC

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E1016

muted

#7E7F84

Preview Lab

Preview with #6389DD

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

Preview Lab → · Contrast checker → · Palette generator →