#6557CE#6557CE

#6557CE is a mid, vivid blue. Relative luminance 0.140; OKLCH L 53.5% C 0.177 H 284.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX#6557CE
RGBrgb(101, 87, 206)
HSLhsl(247, 55%, 57%)
HSVhsv(247, 58%, 81%)
CMYKcmyk(51%, 57.8%, 0%, 19.2%)
CIE-LABlab(44.29, 37.10, -60.06)
CIE-LCHlch(44.29, 70.60, 301.70°)
OKLaboklab(53.5% 0.0429 -0.1719)
OKLCHoklch(53.5% 0.177 284)
XYZxyz(19.9123, 14.0383, 60.0410)
Luminance0.1404 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#6557CE #C0CE57
analogous
#5784CE #6557CE #A157CE
triadic
#6557CE #CE6557 #57CE65
tetradic
#6557CE #CE5784 #C0CE57 #57CEA1
square
#6557CE #CE5784 #C0CE57 #57CEA1
split-complementary
#6557CE #CEA157 #84CE57
monochromatic
#322784 #4334B3 #6557CE #9086DC #BCB6EA

Accessibility & contrast

On white

5.51
#6557CE on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.81
#6557CE on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #6557CE
5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##6557CE#FFFFFF#000000##FFFFFF
##6557CE1.005.513.815.51
#FFFFFF5.511.0021.001.00
#0000003.8121.001.0021.00
##FFFFFF5.511.0021.001.00

Color blindness preview

Protanopia (red-blind)
#006CD2
Deuteranopia (green-blind)
#0065CC
Tritanopia (blue-blind)
#3C728A
Achromatopsia (no color)
#696969

Design tokens & code

CSS
--color: #6557ce;
/* rgb */ color: rgb(101, 87, 206);
/* oklch */ color: oklch(53.5% 0.177 284.0);
Tailwind
colors: {
  custom: {
    50: '#9987de',
    500: '#6557ce',
    950: '#000000',
  },
}
SCSS
$custom: #6557ce;
$custom-light: #9987de;
$custom-dark: #000000;
JSON
{
  "hex": "#6557ce",
  "rgb": {
    "r": 101,
    "g": 87,
    "b": 206
  },
  "hsl": {
    "h": 247.059,
    "s": 54.839,
    "l": 57.451
  },
  "oklch": {
    "l": 0.535,
    "c": 0.17712,
    "h": 284
  },
  "luminance": 0.14039
}

Semantic roles & 50–950 ramp

primary
#6557CE
secondary
#D3D8A8
accent
#DE4ACD
background
#F9F8FD
surface
#F2EFFB
border
#CCCAD4
text
#0F0B15
muted
#7E7C83

Preview Lab

Preview with #6557CE

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

Preview Lab → · Contrast checker → · Palette generator →

#6557CE Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva