#3B66E7#3B66E7

#3B66E7 is a mid, highly saturated blue. Relative luminance 0.162; OKLCH L 55.6% C 0.201 H 266.0°. Best body text is #FFFFFF at 4.95:1 contrast (WCAG AA passes).

Color values

HEX#3B66E7
RGBrgb(59, 102, 231)
HSLhsl(225, 78%, 57%)
HSVhsv(225, 74%, 91%)
CMYKcmyk(74.5%, 55.8%, 0%, 9.4%)
CIE-LABlab(47.24, 29.58, -69.63)
CIE-LCHlch(47.24, 75.65, 293.02°)
OKLaboklab(55.6% -0.0141 -0.2008)
OKLCHoklch(55.6% 0.201 266)
XYZxyz(20.9737, 16.1998, 77.6073)
Luminance0.1620 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B66E7 #E7BC3B
analogous
#3BBCE7 #3B66E7 #663BE7
triadic
#3B66E7 #E73B66 #66E73B
tetradic
#3B66E7 #E73BBC #E7BC3B #3BE766
square
#3B66E7 #E73BBC #E7BC3B #3BE766
split-complementary
#3B66E7 #E7663B #BCE73B
monochromatic
#123395 #1946CC #3B66E7 #7291EE #A8BBF4

Accessibility & contrast

On white

4.95
#3B66E7 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.24
#3B66E7 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B66E7
4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B66E7#FFFFFF#000000##FFFFFF
##3B66E71.004.954.244.95
#FFFFFF4.951.0021.001.00
#0000004.2421.001.0021.00
##FFFFFF4.951.0021.001.00

Color blindness preview

Protanopia (red-blind)
#0078EB
Deuteranopia (green-blind)
#0068E4
Tritanopia (blue-blind)
#00869D
Achromatopsia (no color)
#707070

Design tokens & code

CSS
--color: #3b66e7;
/* rgb */ color: rgb(59, 102, 231);
/* oklch */ color: oklch(55.6% 0.201 266.0);
Tailwind
colors: {
  custom: {
    50: '#8891f0',
    500: '#3b66e7',
    950: '#000000',
  },
}
SCSS
$custom: #3b66e7;
$custom-light: #8891f0;
$custom-dark: #000000;
JSON
{
  "hex": "#3b66e7",
  "rgb": {
    "r": 59,
    "g": 102,
    "b": 231
  },
  "hsl": {
    "h": 225,
    "s": 78.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.55603,
    "c": 0.20135,
    "h": 266
  },
  "luminance": 0.16202
}

Semantic roles & 50–950 ramp

primary
#3B66E7
secondary
#E2D09C
accent
#C433F5
background
#F9F8FE
surface
#F1F0FD
border
#CBCBD5
text
#0D0C17
muted
#7E7D85

Preview Lab

Preview with #3B66E7

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

Preview Lab → · Contrast checker → · Palette generator →

#3B66E7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva