#2B50BB#2B50BB
#2B50BB is a mid, vivid blue. Relative luminance 0.098; OKLCH L 47.1% C 0.174 H 265.5°. Best body text is #FFFFFF at 7.08:1 contrast (WCAG AA passes).
Color values
| HEX | #2B50BB |
|---|---|
| RGB | rgb(43, 80, 187) |
| HSL | hsl(225, 63%, 45%) |
| HSV | hsv(225, 77%, 73%) |
| CMYK | cmyk(77%, 57.2%, 0%, 26.7%) |
| CIE-LAB | lab(37.55, 25.68, -60.13) |
| CIE-LCH | lch(37.55, 65.38, 293.13°) |
| OKLab | oklab(47.11% -0.0135 -0.1736) |
| OKLCH | oklch(47.11% 0.174 265.5) |
| XYZ | xyz(12.8314, 9.8373, 48.2266) |
| Luminance | 0.0984 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire
#0F52BA
ΔE00 2.45
Cobalt
#0047AB
ΔE00 4.15
Blue Blue
#2242C7
ΔE00 4.76
Blue (survey)
#0343DF
ΔE00 5.90
Warm Blue
#4B57DB
ΔE00 6.44
Denim Blue
#3B5B92
ΔE00 6.60
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2B50BB #BB962B
analogous
#2B98BB #2B50BB #4E2BBB
triadic
#2B50BB #BB2B50 #50BB2B
tetradic
#2B50BB #BB2B98 #BB962B #2BBB4E
square
#2B50BB #BB2B98 #BB962B #2BBB4E
split-complementary
#2B50BB #BB4E2B #98BB2B
monochromatic
#142557 #203B89 #2B50BB #4D70D6 #7F98E2
Accessibility & contrast
On white
7.08
#2B50BB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.97
#2B50BB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2B50BB
7.08:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2B50BB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2B50BB | 1.00 | 7.08 | 2.97 | 7.08 |
| #FFFFFF | 7.08 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.97 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.08 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005FBF
Deuteranopia (green-blind)
#0052B9
Tritanopia (blue-blind)
#006B7D
Achromatopsia (no color)
#585858
Design tokens & code
CSS
--color: #2b50bb; /* rgb */ color: rgb(43, 80, 187); /* oklch */ color: oklch(47.1% 0.174 265.5);
Tailwind
colors: {
custom: {
50: '#7a80d0',
500: '#2b50bb',
950: '#000000',
},
}SCSS
$custom: #2b50bb; $custom-light: #7a80d0; $custom-dark: #000000;
JSON
{
"hex": "#2b50bb",
"rgb": {
"r": 43,
"g": 80,
"b": 187
},
"hsl": {
"h": 224.583,
"s": 62.609,
"l": 45.098
},
"oklch": {
"l": 0.47108,
"c": 0.17409,
"h": 265.5
},
"luminance": 0.09839
}Semantic roles & 50–950 ramp
primary
#2B50BB
secondary
#CAB578
accent
#BC42E6
background
#F8F7FC
surface
#EFEEF9
border
#CAC9D2
text
#0B0A14
muted
#7C7C82