#6377EB#6377EB

#6377EB is a mid, vivid blue. Relative luminance 0.218; OKLCH L 61.2% C 0.175 H 272.8°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#6377EB
RGB	rgb(99, 119, 235)
HSL	hsl(231, 77%, 65%)
HSV	hsv(231, 58%, 92%)
CMYK	cmyk(57.9%, 49.4%, 0%, 7.8%)
CIE-LAB	lab(53.86, 26.48, -61.06)
CIE-LCH	lch(53.86, 66.56, 293.44°)
OKLab	oklab(61.23% 0.0086 -0.1746)
OKLCH	oklch(61.23% 0.175 272.8)
XYZ	xyz(26.7329, 21.8424, 81.3884)
Luminance	0.2184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6377EB #EBD763

analogous

#63BBEB #6377EB #9363EB

triadic

#6377EB #EB6377 #77EB63

tetradic

#6377EB #EB63BB #EBD763 #63EB93

square

#6377EB #EB63BB #EBD763 #63EB93

split-complementary

#6377EB #EB9363 #BBEB63

monochromatic

#1830BC #2D48E4 #6377EB #99A6F2 #CFD6F9

Accessibility & contrast

On white

3.91

#6377EB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#6377EB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #6377EB

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6377EB	#FFFFFF	#000000	##000000
##6377EB	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A87EF

Deuteranopia (green-blind)

#217BE9

Tritanopia (blue-blind)

#0091A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #6377eb;
/* rgb */ color: rgb(99, 119, 235);
/* oklch */ color: oklch(61.2% 0.175 272.8);

Tailwind

colors: {
  custom: {
    50: '#9a9ef2',
    500: '#6377eb',
    950: '#000000',
  },
}

SCSS

$custom: #6377eb;
$custom-light: #9a9ef2;
$custom-dark: #000000;

JSON

{
  "hex": "#6377eb",
  "rgb": {
    "r": 99,
    "g": 119,
    "b": 235
  },
  "hsl": {
    "h": 231.176,
    "s": 77.273,
    "l": 65.49
  },
  "oklch": {
    "l": 0.61227,
    "c": 0.17481,
    "h": 272.8
  },
  "luminance": 0.21844
}

Semantic roles & 50–950 ramp

primary

#6377EB

secondary

#ECE5BE

accent

#BB0CDA

background

#FAF9FE

surface

#F3F2FD

border

#CDCCD5

text

#0F0E17

muted

#7F7E85

Preview Lab

Preview with #6377EB

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

Preview Lab → · Contrast checker → · Palette generator →