#287D9B#287D9B
#287D9B is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.3% C 0.091 H 225.9°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).
Color values
| HEX | #287D9B |
|---|---|
| RGB | rgb(40, 125, 155) |
| HSL | hsl(196, 59%, 38%) |
| HSV | hsv(196, 74%, 61%) |
| CMYK | cmyk(74.2%, 19.4%, 0%, 39.2%) |
| CIE-LAB | lab(48.86, -14.76, -23.36) |
| CIE-LCH | lch(48.86, 27.63, 237.73°) |
| OKLab | oklab(55.3% -0.0634 -0.0655) |
| OKLCH | oklch(55.3% 0.091 225.9) |
| XYZ | xyz(14.1227, 17.4833, 33.6343) |
| Luminance | 0.1749 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Dirty Blue
#3F829D
ΔE00 2.77
Sea Blue
#047495
ΔE00 3.71
Cerulean
#007BA7
ΔE00 4.02
Ocean
#017B92
ΔE00 4.08
Teal Blue
#01889F
ΔE00 5.72
Ocean Blue (survey)
#03719C
ΔE00 6.04
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#287D9B #9B4628
analogous
#289B7F #287D9B #28439B
triadic
#287D9B #9B287D #7D9B28
tetradic
#287D9B #7F289B #9B4628 #439B28
square
#287D9B #7F289B #9B4628 #439B28
split-complementary
#287D9B #9B2843 #9B7F28
monochromatic
#0F2F3A #1B566A #287D9B #35A4CB #66BAD7
Accessibility & contrast
On white
4.67
#287D9B on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.50
#287D9B on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #287D9B
4.67:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##287D9B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##287D9B | 1.00 | 4.67 | 4.50 | 4.67 |
| #FFFFFF | 4.67 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.50 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.67 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#6D7A9D
Deuteranopia (green-blind)
#5D6F9B
Tritanopia (blue-blind)
#008687
Achromatopsia (no color)
#747474
Design tokens & code
CSS
--color: #287d9b; /* rgb */ color: rgb(40, 125, 155); /* oklch */ color: oklch(55.3% 0.091 225.9);
Tailwind
colors: {
custom: {
50: '#73a2b8',
500: '#287d9b',
950: '#000000',
},
}SCSS
$custom: #287d9b; $custom-light: #73a2b8; $custom-dark: #000000;
JSON
{
"hex": "#287d9b",
"rgb": {
"r": 40,
"g": 125,
"b": 155
},
"hsl": {
"h": 195.652,
"s": 58.974,
"l": 38.235
},
"oklch": {
"l": 0.55301,
"c": 0.09114,
"h": 225.9
},
"luminance": 0.17485
}Semantic roles & 50–950 ramp
primary
#287D9B
secondary
#BD7961
accent
#6E46E2
background
#F7FAFB
surface
#EDF3F6
border
#C8CDD0
text
#090F11
muted
#7B7F80