#648BEF#648BEF

#648BEF is a light, vivid blue. Relative luminance 0.274; OKLCH L 65.5% C 0.155 H 266.2°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#648BEF
RGB	rgb(100, 139, 239)
HSL	hsl(223, 81%, 66%)
HSV	hsv(223, 58%, 94%)
CMYK	cmyk(58.2%, 41.8%, 0%, 6.3%)
CIE-LAB	lab(59.35, 15.90, -54.50)
CIE-LCH	lch(59.35, 56.77, 286.26°)
OKLab	oklab(65.5% -0.0104 -0.1551)
OKLCH	oklch(65.5% 0.155 266.2)
XYZ	xyz(30.0628, 27.4041, 85.3499)
Luminance	0.2741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#648BEF #EFC864

analogous

#64D1EF #648BEF #8364EF

triadic

#648BEF #EF648B #8BEF64

tetradic

#648BEF #EF64D1 #EFC864 #64EF83

square

#648BEF #EF64D1 #EFC864 #64EF83

split-complementary

#648BEF #EF8364 #D1EF64

monochromatic

#1446C4 #2D61E9 #648BEF #9BB5F5 #D3DEFA

Accessibility & contrast

On white

3.24

#648BEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#648BEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #648BEF

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##648BEF	#FFFFFF	#000000	##000000
##648BEF	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F96F3

Deuteranopia (green-blind)

#4C89ED

Tritanopia (blue-blind)

#00A1B1

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #648bef;
/* rgb */ color: rgb(100, 139, 239);
/* oklch */ color: oklch(65.5% 0.155 266.2);

Tailwind

colors: {
  custom: {
    50: '#9aacf5',
    500: '#648bef',
    950: '#000000',
  },
}

SCSS

$custom: #648bef;
$custom-light: #9aacf5;
$custom-dark: #000000;

JSON

{
  "hex": "#648bef",
  "rgb": {
    "r": 100,
    "g": 139,
    "b": 239
  },
  "hsl": {
    "h": 223.165,
    "s": 81.287,
    "l": 66.471
  },
  "oklch": {
    "l": 0.65503,
    "c": 0.15543,
    "h": 266.2
  },
  "luminance": 0.27407
}

Semantic roles & 50–950 ramp

primary

#648BEF

secondary

#EEE1C1

accent

#A208DE

background

#FAFAFF

surface

#F3F4FE

border

#CDCED6

text

#0F1017

muted

#7F7F85

Preview Lab

Preview with #648BEF

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

Preview Lab → · Contrast checker → · Palette generator →