#2663B3#2663B3
#2663B3 is a mid, vivid cyan. Relative luminance 0.126; OKLCH L 50.4% C 0.141 H 256.7°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).
Color values
| HEX | #2663B3 |
|---|---|
| RGB | rgb(38, 99, 179) |
| HSL | hsl(214, 65%, 43%) |
| HSV | hsv(214, 79%, 70%) |
| CMYK | cmyk(78.8%, 44.7%, 0%, 29.8%) |
| CIE-LAB | lab(42.14, 9.61, -48.03) |
| CIE-LCH | lch(42.14, 48.98, 281.31°) |
| OKLab | oklab(50.38% -0.0326 -0.1377) |
| OKLCH | oklch(50.38% 0.142 256.7) |
| XYZ | xyz(13.3948, 12.5888, 44.3630) |
| Luminance | 0.1259 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Denim
#1560BD
ΔE00 1.46
Mid Blue
#276AB3
ΔE00 2.68
French Blue
#436BAD
ΔE00 3.69
Medium Blue
#2C6FBB
ΔE00 4.36
Denim (survey)
#3B638C
ΔE00 4.54
Denim Blue
#3B5B92
ΔE00 5.38
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2663B3 #B37626
analogous
#26A9B3 #2663B3 #3026B3
triadic
#2663B3 #B32663 #63B326
tetradic
#2663B3 #B326A9 #B37626 #26B330
square
#2663B3 #B326A9 #B37626 #26B330
split-complementary
#2663B3 #B33026 #A9B326
monochromatic
#112B4E #1B4781 #2663B3 #4081D6 #72A2E1
Accessibility & contrast
On white
5.97
#2663B3 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.52
#2663B3 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #2663B3
5.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2663B3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2663B3 | 1.00 | 5.97 | 3.52 | 5.97 |
| #FFFFFF | 5.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.52 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#3A6AB6
Deuteranopia (green-blind)
#1C5EB1
Tritanopia (blue-blind)
#007682
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #2663b3; /* rgb */ color: rgb(38, 99, 179); /* oklch */ color: oklch(50.4% 0.141 256.7);
Tailwind
colors: {
custom: {
50: '#768eca',
500: '#2663b3',
950: '#000000',
},
}SCSS
$custom: #2663b3; $custom-light: #768eca; $custom-dark: #000000;
JSON
{
"hex": "#2663b3",
"rgb": {
"r": 38,
"g": 99,
"b": 179
},
"hsl": {
"h": 214.043,
"s": 64.977,
"l": 42.549
},
"oklch": {
"l": 0.50384,
"c": 0.1415,
"h": 256.7
},
"luminance": 0.1259
}Semantic roles & 50–950 ramp
primary
#2663B3
secondary
#C8A16D
accent
#9F40E8
background
#F7F8FC
surface
#EEF0F8
border
#C9CBD1
text
#0A0C13
muted
#7C7D82