#337CC0#337CC0
#337CC0 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.128 H 249.7°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).
Color values
| HEX | #337CC0 |
|---|---|
| RGB | rgb(51, 124, 192) |
| HSL | hsl(209, 58%, 48%) |
| HSV | hsv(209, 73%, 75%) |
| CMYK | cmyk(73.4%, 35.4%, 0%, 24.7%) |
| CIE-LAB | lab(50.60, 0.52, -42.07) |
| CIE-LCH | lch(50.60, 42.07, 270.71°) |
| OKLab | oklab(57.33% -0.0442 -0.1196) |
| OKLCH | oklch(57.33% 0.128 249.7) |
| XYZ | xyz(18.0837, 18.9228, 52.5584) |
| Luminance | 0.1893 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Windows Blue
#3778BF
ΔE00 1.84
Bluish
#2976BB
ΔE00 2.33
Steel Blue
#4682B4
ΔE00 3.00
Cool Blue
#4984B8
ΔE00 3.39
Flat Blue
#3C73A8
ΔE00 4.15
Cerulean (survey)
#0485D1
ΔE00 4.25
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#337CC0 #C07733
analogous
#33C0BD #337CC0 #3335C0
triadic
#337CC0 #C0337C #7CC033
tetradic
#337CC0 #BD33C0 #C07733 #35C033
square
#337CC0 #BD33C0 #C07733 #35C033
split-complementary
#337CC0 #C03335 #C0BD33
monochromatic
#193E5F #265D90 #337CC0 #5C9AD4 #8DB8E1
Accessibility & contrast
On white
4.39
#337CC0 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.79
#337CC0 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #337CC0
4.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##337CC0 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##337CC0 | 1.00 | 4.39 | 4.79 | 4.79 |
| #FFFFFF | 4.39 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.79 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.79 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5D80C3
Deuteranopia (green-blind)
#4872BF
Tritanopia (blue-blind)
#008C95
Achromatopsia (no color)
#787878
Design tokens & code
CSS
--color: #337cc0; /* rgb */ color: rgb(51, 124, 192); /* oklch */ color: oklch(57.3% 0.128 249.7);
Tailwind
colors: {
custom: {
50: '#7da1d3',
500: '#337cc0',
950: '#000000',
},
}SCSS
$custom: #337cc0; $custom-light: #7da1d3; $custom-dark: #000000;
JSON
{
"hex": "#337cc0",
"rgb": {
"r": 51,
"g": 124,
"b": 192
},
"hsl": {
"h": 208.936,
"s": 58.025,
"l": 47.647
},
"oklch": {
"l": 0.57331,
"c": 0.1275,
"h": 249.7
},
"luminance": 0.18925
}Semantic roles & 50–950 ramp
primary
#337CC0
secondary
#CBA684
accent
#9147E1
background
#F8F9FD
surface
#EFF2FA
border
#CACCD3
text
#0B0E14
muted
#7C7E83