#6557CF#6557CF

#6557CF is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.6% C 0.178 H 283.9°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#6557CF
RGB	rgb(101, 87, 207)
HSL	hsl(247, 56%, 58%)
HSV	hsv(247, 58%, 81%)
CMYK	cmyk(51.2%, 58%, 0%, 18.8%)
CIE-LAB	lab(44.36, 37.40, -60.52)
CIE-LCH	lch(44.36, 71.15, 301.72°)
OKLab	oklab(53.57% 0.0429 -0.1732)
OKLCH	oklch(53.57% 0.178 283.9)
XYZ	xyz(20.0341, 14.0870, 60.6828)
Luminance	0.1409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557CF #C1CF57

analogous

#5785CF #6557CF #A157CF

triadic

#6557CF #CF6557 #57CF65

tetradic

#6557CF #CF5785 #C1CF57 #57CFA1

square

#6557CF #CF5785 #C1CF57 #57CFA1

split-complementary

#6557CF #CFA157 #85CF57

monochromatic

#312685 #4334B5 #6557CF #9187DD #BCB6EA

Accessibility & contrast

On white

5.50

#6557CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#6557CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CF

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557CF	#FFFFFF	#000000	##FFFFFF
##6557CF	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006DD3

Deuteranopia (green-blind)

#0065CC

Tritanopia (blue-blind)

#3C738A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #6557cf;
/* rgb */ color: rgb(101, 87, 207);
/* oklch */ color: oklch(53.6% 0.178 283.9);

Tailwind

colors: {
  custom: {
    50: '#9987de',
    500: '#6557cf',
    950: '#000000',
  },
}

SCSS

$custom: #6557cf;
$custom-light: #9987de;
$custom-dark: #000000;

JSON

{
  "hex": "#6557cf",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 207
  },
  "hsl": {
    "h": 247,
    "s": 55.556,
    "l": 57.647
  },
  "oklch": {
    "l": 0.53574,
    "c": 0.17844,
    "h": 283.9
  },
  "luminance": 0.14088
}

Semantic roles & 50–950 ramp

primary

#6557CF

secondary

#D3D9A9

accent

#DF49CD

background

#F9F8FD

surface

#F2EFFB

border

#CCCAD4

text

#0F0B15

muted

#7E7C83

Preview Lab

Preview with #6557CF

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

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