#399ADB#399ADB

#399ADB is a light, vivid cyan. Relative luminance 0.291; OKLCH L 65.9% C 0.131 H 242.3°. Best body text is #000000 at 6.82:1 contrast (WCAG AA passes).

Color values

HEX#399ADB
RGBrgb(57, 154, 219)
HSLhsl(204, 69%, 54%)
HSVhsv(204, 74%, 86%)
CMYKcmyk(74%, 29.7%, 0%, 14.1%)
CIE-LABlab(60.86, -6.63, -41.11)
CIE-LCHlch(60.86, 41.64, 260.84°)
OKLaboklab(65.9% -0.0612 -0.1164)
OKLCHoklch(65.9% 0.131 242.3)
XYZxyz(26.0242, 29.0925, 71.2480)
Luminance0.2910 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#399ADB #DB7A39
analogous
#39DBCB #399ADB #3949DB
triadic
#399ADB #DB399A #9ADB39
tetradic
#399ADB #CB39DB #DB7A39 #49DB39
square
#399ADB #CB39DB #DB7A39 #49DB39
split-complementary
#399ADB #DB3949 #DBCB39
monochromatic
#185782 #217AB6 #399ADB #6DB4E4 #A1CFEE

Accessibility & contrast

On white

3.08
#399ADB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

6.82
#399ADB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #399ADB
6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##399ADB#FFFFFF#000000##000000
##399ADB1.003.086.826.82
#FFFFFF3.081.0021.0021.00
#0000006.8221.001.001.00
##0000006.8221.001.001.00

Color blindness preview

Protanopia (red-blind)
#7C9BDE
Deuteranopia (green-blind)
#668CDA
Tritanopia (blue-blind)
#00AAB1
Achromatopsia (no color)
#939393

Design tokens & code

CSS
--color: #399adb;
/* rgb */ color: rgb(57, 154, 219);
/* oklch */ color: oklch(65.9% 0.131 242.3);
Tailwind
colors: {
  custom: {
    50: '#84b7e6',
    500: '#399adb',
    950: '#000000',
  },
}
SCSS
$custom: #399adb;
$custom-light: #84b7e6;
$custom-dark: #000000;
JSON
{
  "hex": "#399adb",
  "rgb": {
    "r": 57,
    "g": 154,
    "b": 219
  },
  "hsl": {
    "h": 204.074,
    "s": 69.231,
    "l": 54.118
  },
  "oklch": {
    "l": 0.65903,
    "c": 0.13146,
    "h": 242.3
  },
  "luminance": 0.29096
}

Semantic roles & 50–950 ramp

primary
#399ADB
secondary
#DAB195
accent
#823CEC
background
#F8FBFE
surface
#F0F6FC
border
#CBD0D5
text
#0C1116
muted
#7D8084

Preview Lab

Preview with #399ADB

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

Preview Lab → · Contrast checker → · Palette generator →

#399ADB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva