#287EB1#287EB1

#287EB1 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.6% C 0.112 H 239.7°. Best body text is #000000 at 4.71:1 contrast (WCAG AA passes).

Color values

HEX#287EB1
RGBrgb(40, 126, 177)
HSLhsl(202, 63%, 43%)
HSVhsv(202, 77%, 69%)
CMYKcmyk(77.4%, 28.8%, 0%, 30.6%)
CIE-LABlab(50.15, -7.52, -34.16)
CIE-LCHlch(50.15, 34.97, 257.58°)
OKLaboklab(56.65% -0.0565 -0.0966)
OKLCHoklch(56.65% 0.112 239.7)
XYZxyz(16.2686, 18.5452, 44.3086)
Luminance0.1855 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#287EB1 #B15B28
analogous
#28B1A0 #287EB1 #2839B1
triadic
#287EB1 #B1287E #7EB128
tetradic
#287EB1 #A028B1 #B15B28 #39B128
square
#287EB1 #A028B1 #B15B28 #39B128
split-complementary
#287EB1 #B12839 #B1A028
monochromatic
#11374D #1D5A7F #287EB1 #429ED4 #74B7E0

Accessibility & contrast

On white

4.46
#287EB1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.71
#287EB1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287EB1
4.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##287EB1#FFFFFF#000000##000000
##287EB11.004.464.714.71
#FFFFFF4.461.0021.0021.00
#0000004.7121.001.001.00
##0000004.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#667EB3
Deuteranopia (green-blind)
#5372B0
Tritanopia (blue-blind)
#008B90
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #287eb1;
/* rgb */ color: rgb(40, 126, 177);
/* oklch */ color: oklch(56.6% 0.112 239.7);
Tailwind
colors: {
  custom: {
    50: '#76a3c8',
    500: '#287eb1',
    950: '#000000',
  },
}
SCSS
$custom: #287eb1;
$custom-light: #76a3c8;
$custom-dark: #000000;
JSON
{
  "hex": "#287eb1",
  "rgb": {
    "r": 40,
    "g": 126,
    "b": 177
  },
  "hsl": {
    "h": 202.336,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.5665,
    "c": 0.11192,
    "h": 239.7
  },
  "luminance": 0.18547
}

Semantic roles & 50–950 ramp

primary
#287EB1
secondary
#C78F6E
accent
#7F42E6
background
#F7FAFC
surface
#EEF3F8
border
#C9CDD1
text
#0A0F13
muted
#7C7F82

Preview Lab

Preview with #287EB1

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

Preview Lab → · Contrast checker → · Palette generator →

#287EB1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva