#6388EF#6388EF

#6388EF is a light, vivid blue. Relative luminance 0.265; OKLCH L 64.8% C 0.159 H 267.1°. Best body text is #000000 at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#6388EF
RGB	rgb(99, 136, 239)
HSL	hsl(224, 81%, 66%)
HSV	hsv(224, 59%, 94%)
CMYK	cmyk(58.6%, 43.1%, 0%, 6.3%)
CIE-LAB	lab(58.50, 17.50, -55.85)
CIE-LCH	lch(58.50, 58.53, 287.40°)
OKLab	oklab(64.84% -0.0082 -0.1591)
OKLCH	oklch(64.84% 0.159 267.1)
XYZ	xyz(29.5245, 26.4905, 85.2019)
Luminance	0.2649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6388EF #EFCA63

analogous

#63CEEF #6388EF #8463EF

triadic

#6388EF #EF6388 #88EF63

tetradic

#6388EF #EF63CE #EFCA63 #63EF84

square

#6388EF #EF63CE #EFCA63 #63EF84

split-complementary

#6388EF #EF8463 #CEEF63

monochromatic

#1442C4 #2B5EE9 #6388EF #9BB2F5 #D2DDFA

Accessibility & contrast

On white

3.33

#6388EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.30

#6388EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6388EF

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6388EF	#FFFFFF	#000000	##000000
##6388EF	1.00	3.33	6.30	6.30
#FFFFFF	3.33	1.00	21.00	21.00
#000000	6.30	21.00	1.00	1.00
##000000	6.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A93F3

Deuteranopia (green-blind)

#4687ED

Tritanopia (blue-blind)

#009FB0

Achromatopsia (no color)

#8D8D8D

Design tokens & code

CSS

--color: #6388ef;
/* rgb */ color: rgb(99, 136, 239);
/* oklch */ color: oklch(64.8% 0.159 267.1);

Tailwind

colors: {
  custom: {
    50: '#9aaaf5',
    500: '#6388ef',
    950: '#000000',
  },
}

SCSS

$custom: #6388ef;
$custom-light: #9aaaf5;
$custom-dark: #000000;

JSON

{
  "hex": "#6388ef",
  "rgb": {
    "r": 99,
    "g": 136,
    "b": 239
  },
  "hsl": {
    "h": 224.143,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.64839,
    "c": 0.15931,
    "h": 267.1
  },
  "luminance": 0.26493
}

Semantic roles & 50–950 ramp

primary

#6388EF

secondary

#EEE2C0

accent

#A508DE

background

#FAFAFF

surface

#F3F4FE

border

#CDCED6

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #6388EF

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

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