#2B4BB0#2B4BB0
#2B4BB0 is a mid, vivid blue. Relative luminance 0.087; OKLCH L 45.2% C 0.165 H 266.4°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).
Color values
| HEX | #2B4BB0 |
|---|---|
| RGB | rgb(43, 75, 176) |
| HSL | hsl(226, 61%, 43%) |
| HSV | hsv(226, 76%, 69%) |
| CMYK | cmyk(75.6%, 57.4%, 0%, 31%) |
| CIE-LAB | lab(35.36, 24.82, -57.20) |
| CIE-LCH | lch(35.36, 62.35, 293.45°) |
| OKLab | oklab(45.2% -0.0105 -0.165) |
| OKLCH | oklch(45.2% 0.165 266.4) |
| XYZ | xyz(11.3461, 8.6791, 42.1431) |
| Luminance | 0.0868 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cobalt
#0047AB
ΔE00 2.87
Sapphire
#0F52BA
ΔE00 3.52
Blue Blue
#2242C7
ΔE00 4.35
Cobalt (survey)
#1E488F
ΔE00 5.23
Sapphire (survey)
#2138AB
ΔE00 5.83
Blue (survey)
#0343DF
ΔE00 6.38
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2B4BB0 #B0902B
analogous
#2B8DB0 #2B4BB0 #4D2BB0
triadic
#2B4BB0 #B02B4B #4BB02B
tetradic
#2B4BB0 #B02B8D #B0902B #2BB04D
square
#2B4BB0 #B02B8D #B0902B #2BB04D
split-complementary
#2B4BB0 #B04D2B #8DB02B
monochromatic
#13214E #1F367F #2B4BB0 #4668D2 #7890DE
Accessibility & contrast
On white
7.68
#2B4BB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.74
#2B4BB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2B4BB0
7.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2B4BB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2B4BB0 | 1.00 | 7.68 | 2.74 | 7.68 |
| #FFFFFF | 7.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.74 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#005AB3
Deuteranopia (green-blind)
#004DAE
Tritanopia (blue-blind)
#006476
Achromatopsia (no color)
#535353
Design tokens & code
CSS
--color: #2b4bb0; /* rgb */ color: rgb(43, 75, 176); /* oklch */ color: oklch(45.2% 0.165 266.4);
Tailwind
colors: {
custom: {
50: '#787cc8',
500: '#2b4bb0',
950: '#000000',
},
}SCSS
$custom: #2b4bb0; $custom-light: #787cc8; $custom-dark: #000000;
JSON
{
"hex": "#2b4bb0",
"rgb": {
"r": 43,
"g": 75,
"b": 176
},
"hsl": {
"h": 225.564,
"s": 60.731,
"l": 42.941
},
"oklch": {
"l": 0.45196,
"c": 0.16537,
"h": 266.4
},
"luminance": 0.0868
}Semantic roles & 50–950 ramp
primary
#2B4BB0
secondary
#C6B171
accent
#BD44E4
background
#F7F7FC
surface
#EEEEF8
border
#C9C9D1
text
#0A0913
muted
#7C7B82