#6657CC#6657CC

#6657CC is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.4% C 0.174 H 284.7°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#6657CC
RGB	rgb(102, 87, 204)
HSL	hsl(248, 53%, 57%)
HSV	hsv(248, 57%, 80%)
CMYK	cmyk(50%, 57.4%, 0%, 20%)
CIE-LAB	lab(44.23, 36.69, -59.00)
CIE-LCH	lch(44.23, 69.48, 301.88°)
OKLab	oklab(53.44% 0.0441 -0.1687)
OKLCH	oklch(53.44% 0.174 284.7)
XYZ	xyz(19.7835, 13.9998, 58.7748)
Luminance	0.1400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6657CC #BDCC57

analogous

#5783CC #6657CC #A057CC

triadic

#6657CC #CC6657 #57CC66

tetradic

#6657CC #CC5783 #BDCC57 #57CCA0

square

#6657CC #CC5783 #BDCC57 #57CCA0

split-complementary

#6657CC #CCA057 #83CC57

monochromatic

#332781 #4536B0 #6657CC #9186DA #BCB5E9

Accessibility & contrast

On white

5.53

#6657CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#6657CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6657CC

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6657CC	#FFFFFF	#000000	##FFFFFF
##6657CC	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006CD0

Deuteranopia (green-blind)

#0065CA

Tritanopia (blue-blind)

#407289

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #6657cc;
/* rgb */ color: rgb(102, 87, 204);
/* oklch */ color: oklch(53.4% 0.174 284.7);

Tailwind

colors: {
  custom: {
    50: '#9987dc',
    500: '#6657cc',
    950: '#000000',
  },
}

SCSS

$custom: #6657cc;
$custom-light: #9987dc;
$custom-dark: #000000;

JSON

{
  "hex": "#6657cc",
  "rgb": {
    "r": 102,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 247.692,
    "s": 53.425,
    "l": 57.059
  },
  "oklch": {
    "l": 0.53436,
    "c": 0.17438,
    "h": 284.7
  },
  "luminance": 0.14001
}

Semantic roles & 50–950 ramp

primary

#6657CC

secondary

#D1D7A8

accent

#DD4BCA

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #6657CC

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

Preview Lab → · Contrast checker → · Palette generator →