#3988B8#3988B8

#3988B8 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.106 H 238.8°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX#3988B8
RGBrgb(57, 136, 184)
HSLhsl(203, 53%, 47%)
HSVhsv(203, 69%, 72%)
CMYKcmyk(69%, 26.1%, 0%, 27.8%)
CIE-LABlab(53.96, -8.48, -32.19)
CIE-LCHlch(53.96, 33.29, 255.24°)
OKLaboklab(59.91% -0.0548 -0.0906)
OKLCHoklch(59.91% 0.106 238.8)
XYZxyz(19.1399, 21.9368, 48.5636)
Luminance0.2194 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3988B8 #B86939
analogous
#39B8A8 #3988B8 #3949B8
triadic
#3988B8 #B83988 #88B839
tetradic
#3988B8 #A839B8 #B86939 #49B839
square
#3988B8 #A839B8 #B86939 #49B839
split-complementary
#3988B8 #B83949 #B8A839
monochromatic
#1C435B #2B6589 #3988B8 #60A4CE #8FBFDC

Accessibility & contrast

On white

3.90
#3988B8 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.39
#3988B8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988B8
5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3988B8#FFFFFF#000000##000000
##3988B81.003.905.395.39
#FFFFFF3.901.0021.0021.00
#0000005.3921.001.001.00
##0000005.3921.001.001.00

Color blindness preview

Protanopia (red-blind)
#7288BA
Deuteranopia (green-blind)
#607BB7
Tritanopia (blue-blind)
#009498
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3988b8;
/* rgb */ color: rgb(57, 136, 184);
/* oklch */ color: oklch(59.9% 0.106 238.8);
Tailwind
colors: {
  custom: {
    50: '#7eaacd',
    500: '#3988b8',
    950: '#000000',
  },
}
SCSS
$custom: #3988b8;
$custom-light: #7eaacd;
$custom-dark: #000000;
JSON
{
  "hex": "#3988b8",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 184
  },
  "hsl": {
    "h": 202.677,
    "s": 52.697,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5991,
    "c": 0.10593,
    "h": 238.8
  },
  "luminance": 0.21939
}

Semantic roles & 50–950 ramp

primary
#3988B8
secondary
#C79E86
accent
#824CDC
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3988B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3988B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva