#6557BF#6557BF

#6557BF is a mid, vivid blue. Relative luminance 0.133; OKLCH L 52.4% C 0.157 H 285.8°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#6557BF
RGB	rgb(101, 87, 191)
HSL	hsl(248, 45%, 55%)
HSV	hsv(248, 54%, 75%)
CMYK	cmyk(47.1%, 54.5%, 0%, 25.1%)
CIE-LAB	lab(43.28, 32.56, -53.02)
CIE-LCH	lch(43.28, 62.22, 301.56°)
OKLab	oklab(52.43% 0.0427 -0.1511)
OKLCH	oklch(52.43% 0.157 285.8)
XYZ	xyz(18.1762, 13.3439, 50.8980)
Luminance	0.1335 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6557BF #B1BF57

analogous

#577DBF #6557BF #9957BF

triadic

#6557BF #BF6557 #57BF65

tetradic

#6557BF #BF577D #B1BF57 #57BF99

square

#6557BF #BF577D #B1BF57 #57BF99

split-complementary

#6557BF #BF9957 #7DBF57

monochromatic

#342B71 #493C9D #6557BF #8E83D0 #B6B0E1

Accessibility & contrast

On white

5.72

#6557BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#6557BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557BF

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6557BF	#FFFFFF	#000000	##FFFFFF
##6557BF	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F69C3

Deuteranopia (green-blind)

#1B63BD

Tritanopia (blue-blind)

#476E82

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #6557bf;
/* rgb */ color: rgb(101, 87, 191);
/* oklch */ color: oklch(52.4% 0.157 285.8);

Tailwind

colors: {
  custom: {
    50: '#9787d3',
    500: '#6557bf',
    950: '#000000',
  },
}

SCSS

$custom: #6557bf;
$custom-light: #9787d3;
$custom-dark: #000000;

JSON

{
  "hex": "#6557bf",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 191
  },
  "hsl": {
    "h": 248.077,
    "s": 44.828,
    "l": 54.51
  },
  "oklch": {
    "l": 0.5243,
    "c": 0.15706,
    "h": 285.8
  },
  "luminance": 0.13345
}

Semantic roles & 50–950 ramp

primary

#6557BF

secondary

#C9CFA3

accent

#D553C3

background

#F9F8FD

surface

#F2EFFA

border

#CCCAD3

text

#0E0B14

muted

#7E7C83

Preview Lab

Preview with #6557BF

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

Preview Lab → · Contrast checker → · Palette generator →