#3888CB#3888CB

#3888CB is a mid, vivid cyan. Relative luminance 0.228; OKLCH L 60.9% C 0.128 H 247.3°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX#3888CB
RGBrgb(56, 136, 203)
HSLhsl(207, 59%, 51%)
HSVhsv(207, 72%, 80%)
CMYKcmyk(72.4%, 33%, 0%, 20.4%)
CIE-LABlab(54.82, -1.99, -41.64)
CIE-LCHlch(54.82, 41.69, 267.26°)
OKLaboklab(60.88% -0.0495 -0.1181)
OKLCHoklch(60.88% 0.128 247.3)
XYZxyz(21.2104, 22.7585, 59.7633)
Luminance0.2276 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3888CB #CB7B38
analogous
#38CBC5 #3888CB #383ECB
triadic
#3888CB #CB3888 #88CB38
tetradic
#3888CB #C538CB #CB7B38 #3ECB38
square
#3888CB #C538CB #CB7B38 #3ECB38
split-complementary
#3888CB #CB383E #CBC538
monochromatic
#1C486C #29689D #3888CB #69A5D8 #99C2E4

Accessibility & contrast

On white

3.78
#3888CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.55
#3888CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3888CB
5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3888CB#FFFFFF#000000##000000
##3888CB1.003.785.555.55
#FFFFFF3.781.0021.0021.00
#0000005.5521.001.001.00
##0000005.5521.001.001.00

Color blindness preview

Protanopia (red-blind)
#6A8BCE
Deuteranopia (green-blind)
#557DCA
Tritanopia (blue-blind)
#0098A0
Achromatopsia (no color)
#838383

Design tokens & code

CSS
--color: #3888cb;
/* rgb */ color: rgb(56, 136, 203);
/* oklch */ color: oklch(60.9% 0.128 247.3);
Tailwind
colors: {
  custom: {
    50: '#81aadb',
    500: '#3888cb',
    950: '#000000',
  },
}
SCSS
$custom: #3888cb;
$custom-light: #81aadb;
$custom-dark: #000000;
JSON
{
  "hex": "#3888cb",
  "rgb": {
    "r": 56,
    "g": 136,
    "b": 203
  },
  "hsl": {
    "h": 207.347,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.60877,
    "c": 0.1281,
    "h": 247.3
  },
  "luminance": 0.22761
}

Semantic roles & 50–950 ramp

primary
#3888CB
secondary
#D0AD8F
accent
#8D46E2
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C1015
muted
#7D7F83

Preview Lab

Preview with #3888CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3888CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva