#6371EF#6371EF

#6371EF is a mid, vivid blue. Relative luminance 0.207; OKLCH L 60.4% C 0.188 H 274.5°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#6371EF
RGB	rgb(99, 113, 239)
HSL	hsl(234, 81%, 66%)
HSV	hsv(234, 59%, 94%)
CMYK	cmyk(58.6%, 52.7%, 0%, 6.3%)
CIE-LAB	lab(52.61, 31.42, -65.31)
CIE-LCH	lch(52.61, 72.47, 295.69°)
OKLab	oklab(60.37% 0.0149 -0.1871)
OKLCH	oklch(60.37% 0.188 274.5)
XYZ	xyz(26.6256, 20.6929, 84.2357)
Luminance	0.2069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6371EF #EFE163

analogous

#63B7EF #6371EF #9B63EF

triadic

#6371EF #EF6371 #71EF63

tetradic

#6371EF #EF63B7 #EFE163 #63EF9B

square

#6371EF #EF63B7 #EFE163 #63EF9B

split-complementary

#6371EF #EF9B63 #B7EF63

monochromatic

#1426C4 #2B3EE9 #6371EF #9BA4F5 #D2D6FA

Accessibility & contrast

On white

4.09

#6371EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#6371EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6371EF

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6371EF	#FFFFFF	#000000	##000000
##6371EF	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#2284F3

Deuteranopia (green-blind)

#0078EC

Tritanopia (blue-blind)

#008EA5

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #6371ef;
/* rgb */ color: rgb(99, 113, 239);
/* oklch */ color: oklch(60.4% 0.188 274.5);

Tailwind

colors: {
  custom: {
    50: '#9b99f5',
    500: '#6371ef',
    950: '#000000',
  },
}

SCSS

$custom: #6371ef;
$custom-light: #9b99f5;
$custom-dark: #000000;

JSON

{
  "hex": "#6371ef",
  "rgb": {
    "r": 99,
    "g": 113,
    "b": 239
  },
  "hsl": {
    "h": 234,
    "s": 81.395,
    "l": 66.275
  },
  "oklch": {
    "l": 0.60368,
    "c": 0.18773,
    "h": 274.5
  },
  "luminance": 0.20695
}

Semantic roles & 50–950 ramp

primary

#6371EF

secondary

#EEE9C0

accent

#C808DE

background

#FAF9FF

surface

#F4F2FE

border

#CECCD6

text

#0F0E17

muted

#7F7E85

Preview Lab

Preview with #6371EF

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

Preview Lab → · Contrast checker → · Palette generator →