#3F90B4#3F90B4

#3F90B4 is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.8% C 0.095 H 230.2°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX#3F90B4
RGBrgb(63, 144, 180)
HSLhsl(198, 48%, 48%)
HSVhsv(198, 65%, 71%)
CMYKcmyk(65%, 20%, 0%, 29.4%)
CIE-LABlab(56.38, -13.33, -26.13)
CIE-LCHlch(56.38, 29.33, 242.97°)
OKLaboklab(61.84% -0.0609 -0.0731)
OKLCHoklch(61.84% 0.095 230.2)
XYZxyz(20.2581, 24.2965, 46.7932)
Luminance0.2430 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3F90B4 #B4633F
analogous
#3FB49E #3F90B4 #3F55B4
triadic
#3F90B4 #B43F90 #90B43F
tetradic
#3F90B4 #9E3FB4 #B4633F #55B43F
square
#3F90B4 #9E3FB4 #B4633F #55B43F
split-complementary
#3F90B4 #B43F55 #B49E3F
monochromatic
#1F4759 #2F6C87 #3F90B4 #67ABCA #94C4DA

Accessibility & contrast

On white

3.58
#3F90B4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.86
#3F90B4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F90B4
5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3F90B4#FFFFFF#000000##000000
##3F90B41.003.585.865.86
#FFFFFF3.581.0021.0021.00
#0000005.8621.001.001.00
##0000005.8621.001.001.00

Color blindness preview

Protanopia (red-blind)
#7E8EB6
Deuteranopia (green-blind)
#6D82B4
Tritanopia (blue-blind)
#009A9C
Achromatopsia (no color)
#878787

Design tokens & code

CSS
--color: #3f90b4;
/* rgb */ color: rgb(63, 144, 180);
/* oklch */ color: oklch(61.8% 0.095 230.2);
Tailwind
colors: {
  custom: {
    50: '#80b0ca',
    500: '#3f90b4',
    950: '#000000',
  },
}
SCSS
$custom: #3f90b4;
$custom-light: #80b0ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3f90b4",
  "rgb": {
    "r": 63,
    "g": 144,
    "b": 180
  },
  "hsl": {
    "h": 198.462,
    "s": 48.148,
    "l": 47.647
  },
  "oklch": {
    "l": 0.61836,
    "c": 0.09514,
    "h": 230.2
  },
  "luminance": 0.24299
}

Semantic roles & 50–950 ramp

primary
#3F90B4
secondary
#C59C8A
accent
#7A50D8
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B1013
muted
#7C7F82

Preview Lab

Preview with #3F90B4

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

Preview Lab → · Contrast checker → · Palette generator →

#3F90B4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva