#2B3FB0#2B3FB0
#2B3FB0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.180 H 269.3°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).
Color values
| HEX | #2B3FB0 |
|---|---|
| RGB | rgb(43, 63, 176) |
| HSL | hsl(231, 61%, 43%) |
| HSV | hsv(231, 76%, 69%) |
| CMYK | cmyk(75.6%, 64.2%, 0%, 31%) |
| CIE-LAB | lab(32.26, 32.70, -62.26) |
| CIE-LCH | lch(32.26, 70.32, 297.71°) |
| OKLab | oklab(42.9% -0.0023 -0.18) |
| OKLCH | oklch(42.9% 0.18 269.3) |
| XYZ | xyz(10.6075, 7.2020, 41.8970) |
| Luminance | 0.0720 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.13
Blue Blue
#2242C7
ΔE00 3.09
Cobalt
#0047AB
ΔE00 4.83
Ocean Blue
#4F42B5
ΔE00 4.86
Blueberry
#464196
ΔE00 5.40
Blue (survey)
#0343DF
ΔE00 5.93
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2B3FB0 #B09C2B
analogous
#2B82B0 #2B3FB0 #592BB0
triadic
#2B3FB0 #B02B3F #3FB02B
tetradic
#2B3FB0 #B02B82 #B09C2B #2BB059
square
#2B3FB0 #B02B82 #B09C2B #2BB059
split-complementary
#2B3FB0 #B0592B #82B02B
monochromatic
#131C4E #1F2D7F #2B3FB0 #465BD2 #7887DE
Accessibility & contrast
On white
8.60
#2B3FB0 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.44
#2B3FB0 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2B3FB0
8.60:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2B3FB0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2B3FB0 | 1.00 | 8.60 | 2.44 | 8.60 |
| #FFFFFF | 8.60 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.44 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.60 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0052B4
Deuteranopia (green-blind)
#0046AE
Tritanopia (blue-blind)
#005D71
Achromatopsia (no color)
#4C4C4C
Design tokens & code
CSS
--color: #2b3fb0; /* rgb */ color: rgb(43, 63, 176); /* oklch */ color: oklch(42.9% 0.180 269.3);
Tailwind
colors: {
custom: {
50: '#7974c9',
500: '#2b3fb0',
950: '#000000',
},
}SCSS
$custom: #2b3fb0; $custom-light: #7974c9; $custom-dark: #000000;
JSON
{
"hex": "#2b3fb0",
"rgb": {
"r": 43,
"g": 63,
"b": 176
},
"hsl": {
"h": 230.977,
"s": 60.731,
"l": 42.941
},
"oklch": {
"l": 0.42895,
"c": 0.18003,
"h": 269.3
},
"luminance": 0.07203
}Semantic roles & 50–950 ramp
primary
#2B3FB0
secondary
#C6B971
accent
#CC44E4
background
#F8F7FC
surface
#EFEDF8
border
#CAC8D1
text
#0B0813
muted
#7C7B82