#3988B9#3988B9

#3988B9 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 60.0% C 0.107 H 239.4°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX#3988B9
RGBrgb(57, 136, 185)
HSLhsl(203, 53%, 47%)
HSVhsv(203, 69%, 73%)
CMYKcmyk(69.2%, 26.5%, 0%, 27.5%)
CIE-LABlab(54.00, -8.14, -32.69)
CIE-LCHlch(54.00, 33.69, 256.02°)
OKLaboklab(59.96% -0.0545 -0.0921)
OKLCHoklch(59.96% 0.107 239.4)
XYZxyz(19.2451, 21.9789, 49.1176)
Luminance0.2198 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3988B9 #B96A39
analogous
#39B9AA #3988B9 #3948B9
triadic
#3988B9 #B93988 #88B939
tetradic
#3988B9 #AA39B9 #B96A39 #48B939
square
#3988B9 #AA39B9 #B96A39 #48B939
split-complementary
#3988B9 #B93948 #B9AA39
monochromatic
#1C435B #2B668A #3988B9 #61A4CE #90BFDD

Accessibility & contrast

On white

3.89
#3988B9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.40
#3988B9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3988B9
5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3988B9#FFFFFF#000000##000000
##3988B91.003.895.405.40
#FFFFFF3.891.0021.0021.00
#0000005.4021.001.001.00
##0000005.4021.001.001.00

Color blindness preview

Protanopia (red-blind)
#7188BB
Deuteranopia (green-blind)
#607CB8
Tritanopia (blue-blind)
#009499
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #3988b9;
/* rgb */ color: rgb(57, 136, 185);
/* oklch */ color: oklch(60.0% 0.107 239.4);
Tailwind
colors: {
  custom: {
    50: '#7eaace',
    500: '#3988b9',
    950: '#000000',
  },
}
SCSS
$custom: #3988b9;
$custom-light: #7eaace;
$custom-dark: #000000;
JSON
{
  "hex": "#3988b9",
  "rgb": {
    "r": 57,
    "g": 136,
    "b": 185
  },
  "hsl": {
    "h": 202.969,
    "s": 52.893,
    "l": 47.451
  },
  "oklch": {
    "l": 0.5996,
    "c": 0.107,
    "h": 239.4
  },
  "luminance": 0.21981
}

Semantic roles & 50–950 ramp

primary
#3988B9
secondary
#C89F86
accent
#834BDC
background
#F8FAFC
surface
#EFF4F9
border
#CACED2
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3988B9

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

Preview Lab → · Contrast checker → · Palette generator →

#3988B9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva