#3B91CB#3B91CB

#3B91CB is a light, moderate cyan. Relative luminance 0.255; OKLCH L 63.1% C 0.120 H 241.9°. Best body text is #000000 at 6.10:1 contrast (WCAG AA passes).

Color values

HEX#3B91CB
RGBrgb(59, 145, 203)
HSLhsl(204, 58%, 51%)
HSVhsv(204, 71%, 80%)
CMYKcmyk(70.9%, 28.6%, 0%, 20.4%)
CIE-LABlab(57.55, -6.79, -37.35)
CIE-LCHlch(57.55, 37.96, 259.70°)
OKLaboklab(63.05% -0.0564 -0.1055)
OKLCHoklch(63.05% 0.12 241.9)
XYZxyz(22.7044, 25.4899, 60.2118)
Luminance0.2549 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3B91CB #CB753B
analogous
#3BCBBD #3B91CB #3B49CB
triadic
#3B91CB #CB3B91 #91CB3B
tetradic
#3B91CB #BD3BCB #CB753B #49CB3B
square
#3B91CB #BD3BCB #CB753B #49CB3B
split-complementary
#3B91CB #CB3B49 #CBBD3B
monochromatic
#1D4E6E #2A709F #3B91CB #6BACD8 #9CC7E5

Accessibility & contrast

On white

3.44
#3B91CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.10
#3B91CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B91CB
6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3B91CB#FFFFFF#000000##000000
##3B91CB1.003.446.106.10
#FFFFFF3.441.0021.0021.00
#0000006.1021.001.001.00
##0000006.1021.001.001.00

Color blindness preview

Protanopia (red-blind)
#7692CE
Deuteranopia (green-blind)
#6384CA
Tritanopia (blue-blind)
#009FA5
Achromatopsia (no color)
#8A8A8A

Design tokens & code

CSS
--color: #3b91cb;
/* rgb */ color: rgb(59, 145, 203);
/* oklch */ color: oklch(63.1% 0.120 241.9);
Tailwind
colors: {
  custom: {
    50: '#82b1db',
    500: '#3b91cb',
    950: '#000000',
  },
}
SCSS
$custom: #3b91cb;
$custom-light: #82b1db;
$custom-dark: #000000;
JSON
{
  "hex": "#3b91cb",
  "rgb": {
    "r": 59,
    "g": 145,
    "b": 203
  },
  "hsl": {
    "h": 204.167,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.63054,
    "c": 0.11966,
    "h": 241.9
  },
  "luminance": 0.25492
}

Semantic roles & 50–950 ramp

primary
#3B91CB
secondary
#D1AB91
accent
#8547E1
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3B91CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3B91CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva