#4285B1#4285B1

#4285B1 is a mid, moderate cyan. Relative luminance 0.211; OKLCH L 59.2% C 0.096 H 239.9°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX#4285B1
RGBrgb(66, 133, 177)
HSLhsl(204, 46%, 48%)
HSVhsv(204, 63%, 69%)
CMYKcmyk(62.7%, 24.9%, 0%, 30.6%)
CIE-LABlab(53.07, -7.58, -29.55)
CIE-LCHlch(53.07, 30.50, 255.61°)
OKLaboklab(59.19% -0.0481 -0.0829)
OKLCHoklch(59.19% 0.096 239.9)
XYZxyz(18.5671, 21.1058, 44.6818)
Luminance0.2111 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#4285B1 #B16E42
analogous
#42B1A6 #4285B1 #424DB1
triadic
#4285B1 #B14285 #85B142
tetradic
#4285B1 #A642B1 #B16E42 #4DB142
square
#4285B1 #A642B1 #B16E42 #4DB142
split-complementary
#4285B1 #B1424D #B1A642
monochromatic
#214258 #316484 #4285B1 #69A2C7 #96BED8

Accessibility & contrast

On white

4.02
#4285B1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.22
#4285B1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #4285B1
5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##4285B1#FFFFFF#000000##000000
##4285B11.004.025.225.22
#FFFFFF4.021.0021.0021.00
#0000005.2221.001.001.00
##0000005.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#7185B3
Deuteranopia (green-blind)
#627AB0
Tritanopia (blue-blind)
#009094
Achromatopsia (no color)
#7F7F7F

Design tokens & code

CSS
--color: #4285b1;
/* rgb */ color: rgb(66, 133, 177);
/* oklch */ color: oklch(59.2% 0.096 239.9);
Tailwind
colors: {
  custom: {
    50: '#81a8c8',
    500: '#4285b1',
    950: '#000000',
  },
}
SCSS
$custom: #4285b1;
$custom-light: #81a8c8;
$custom-dark: #000000;
JSON
{
  "hex": "#4285b1",
  "rgb": {
    "r": 66,
    "g": 133,
    "b": 177
  },
  "hsl": {
    "h": 203.784,
    "s": 45.679,
    "l": 47.647
  },
  "oklch": {
    "l": 0.59186,
    "c": 0.09587,
    "h": 239.9
  },
  "luminance": 0.21108
}

Semantic roles & 50–950 ramp

primary
#4285B1
secondary
#C3A28B
accent
#8652D5
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #4285B1

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

Preview Lab → · Contrast checker → · Palette generator →

#4285B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva