#287DA4#287DA4

#287DA4 is a mid, moderate cyan. Relative luminance 0.178; OKLCH L 55.7% C 0.099 H 232.7°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX#287DA4
RGBrgb(40, 125, 164)
HSLhsl(199, 61%, 40%)
HSVhsv(199, 76%, 64%)
CMYKcmyk(75.6%, 23.8%, 0%, 35.7%)
CIE-LABlab(49.25, -11.60, -28.02)
CIE-LCHlch(49.25, 30.33, 247.50°)
OKLaboklab(55.74% -0.06 -0.0789)
OKLCHoklch(55.74% 0.099 232.7)
XYZxyz(14.9068, 17.7969, 37.7643)
Luminance0.1780 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#287DA4 #A44F28
analogous
#28A48D #287DA4 #283FA4
triadic
#287DA4 #A4287D #7DA428
tetradic
#287DA4 #8D28A4 #A44F28 #3FA428
square
#287DA4 #8D28A4 #A44F28 #3FA428
split-complementary
#287DA4 #A4283F #A48D28
monochromatic
#103242 #1C5773 #287DA4 #3AA0CF #6BB8DB

Accessibility & contrast

On white

4.61
#287DA4 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.56
#287DA4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287DA4
4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##287DA4#FFFFFF#000000##FFFFFF
##287DA41.004.614.564.61
#FFFFFF4.611.0021.001.00
#0000004.5621.001.0021.00
##FFFFFF4.611.0021.001.00

Color blindness preview

Protanopia (red-blind)
#6A7CA6
Deuteranopia (green-blind)
#5970A3
Tritanopia (blue-blind)
#00878A
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #287da4;
/* rgb */ color: rgb(40, 125, 164);
/* oklch */ color: oklch(55.7% 0.099 232.7);
Tailwind
colors: {
  custom: {
    50: '#74a2bf',
    500: '#287da4',
    950: '#000000',
  },
}
SCSS
$custom: #287da4;
$custom-light: #74a2bf;
$custom-dark: #000000;
JSON
{
  "hex": "#287da4",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 164
  },
  "hsl": {
    "h": 198.871,
    "s": 60.784,
    "l": 40
  },
  "oklch": {
    "l": 0.55736,
    "c": 0.0991,
    "h": 232.7
  },
  "luminance": 0.17799
}

Semantic roles & 50–950 ramp

primary
#287DA4
secondary
#C18366
accent
#7644E4
background
#F7F9FB
surface
#EEF2F7
border
#C9CCD0
text
#090F12
muted
#7B7E81

Preview Lab

Preview with #287DA4

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

Preview Lab → · Contrast checker → · Palette generator →

#287DA4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva