#6388E5#6388E5

#6388E5 is a light, vivid blue. Relative luminance 0.259; OKLCH L 64.2% C 0.146 H 266.1°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#6388E5
RGB	rgb(99, 136, 229)
HSL	hsl(223, 71%, 64%)
HSV	hsv(223, 57%, 90%)
CMYK	cmyk(56.8%, 40.6%, 0%, 10.2%)
CIE-LAB	lab(57.96, 14.26, -51.16)
CIE-LCH	lch(57.96, 53.11, 285.57°)
OKLab	oklab(64.25% -0.01 -0.1453)
OKLCH	oklch(64.25% 0.146 266.1)
XYZ	xyz(28.0878, 25.9159, 77.6357)
Luminance	0.2592 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6388E5 #E5C063

analogous

#63C9E5 #6388E5 #7F63E5

triadic

#6388E5 #E56388 #88E563

tetradic

#6388E5 #E563C9 #E5C063 #63E57F

square

#6388E5 #E563C9 #E5C063 #63E57F

split-complementary

#6388E5 #E57F63 #C9E563

monochromatic

#1D47B0 #2F60DC #6388E5 #97B0EE #CCD8F6

Accessibility & contrast

On white

3.40

#6388E5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.18

#6388E5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6388E5

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6388E5	#FFFFFF	#000000	##000000
##6388E5	1.00	3.40	6.18	6.18
#FFFFFF	3.40	1.00	21.00	21.00
#000000	6.18	21.00	1.00	1.00
##000000	6.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6092E9

Deuteranopia (green-blind)

#4F86E3

Tritanopia (blue-blind)

#009DAB

Achromatopsia (no color)

#8B8B8B

Design tokens & code

CSS

--color: #6388e5;
/* rgb */ color: rgb(99, 136, 229);
/* oklch */ color: oklch(64.2% 0.146 266.1);

Tailwind

colors: {
  custom: {
    50: '#99aaee',
    500: '#6388e5',
    950: '#000000',
  },
}

SCSS

$custom: #6388e5;
$custom-light: #99aaee;
$custom-dark: #000000;

JSON

{
  "hex": "#6388e5",
  "rgb": {
    "r": 99,
    "g": 136,
    "b": 229
  },
  "hsl": {
    "h": 222.923,
    "s": 71.429,
    "l": 64.314
  },
  "oklch": {
    "l": 0.64246,
    "c": 0.14569,
    "h": 266.1
  },
  "luminance": 0.25918
}

Semantic roles & 50–950 ramp

primary

#6388E5

secondary

#E8DCBB

accent

#9C12D3

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0F1016

muted

#7E7F84

Preview Lab

Preview with #6388E5

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

Preview Lab → · Contrast checker → · Palette generator →