#2B3FAB#2B3FAB
#2B3FAB is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.173 H 269.3°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).
Color values
| HEX | #2B3FAB |
|---|---|
| RGB | rgb(43, 63, 171) |
| HSL | hsl(231, 60%, 42%) |
| HSV | hsv(231, 75%, 67%) |
| CMYK | cmyk(74.9%, 63.2%, 0%, 32.9%) |
| CIE-LAB | lab(31.82, 30.86, -59.99) |
| CIE-LCH | lch(31.82, 67.46, 297.22°) |
| OKLab | oklab(42.44% -0.0021 -0.1734) |
| OKLCH | oklch(42.44% 0.173 269.3) |
| XYZ | xyz(10.1219, 7.0078, 39.3394) |
| Luminance | 0.0701 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.06
Blue Blue
#2242C7
ΔE00 3.75
Cobalt
#0047AB
ΔE00 4.60
Blueberry
#464196
ΔE00 5.02
Ocean Blue
#4F42B5
ΔE00 5.18
Blue (survey)
#0343DF
ΔE00 6.59
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2B3FAB #AB972B
analogous
#2B7FAB #2B3FAB #572BAB
triadic
#2B3FAB #AB2B3F #3FAB2B
tetradic
#2B3FAB #AB2B7F #AB972B #2BAB57
square
#2B3FAB #AB2B7F #AB972B #2BAB57
split-complementary
#2B3FAB #AB572B #7FAB2B
monochromatic
#121B49 #1F2D7A #2B3FAB #4359D0 #7485DC
Accessibility & contrast
On white
8.74
#2B3FAB on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.40
#2B3FAB on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2B3FAB
8.74:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2B3FAB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2B3FAB | 1.00 | 8.74 | 2.40 | 8.74 |
| #FFFFFF | 8.74 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.40 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.74 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0051AE
Deuteranopia (green-blind)
#0045A9
Tritanopia (blue-blind)
#005B6F
Achromatopsia (no color)
#4B4B4B
Design tokens & code
CSS
--color: #2b3fab; /* rgb */ color: rgb(43, 63, 171); /* oklch */ color: oklch(42.4% 0.173 269.3);
Tailwind
colors: {
custom: {
50: '#7874c5',
500: '#2b3fab',
950: '#000000',
},
}SCSS
$custom: #2b3fab; $custom-light: #7874c5; $custom-dark: #000000;
JSON
{
"hex": "#2b3fab",
"rgb": {
"r": 43,
"g": 63,
"b": 171
},
"hsl": {
"h": 230.625,
"s": 59.813,
"l": 41.961
},
"oklch": {
"l": 0.42437,
"c": 0.17338,
"h": 269.3
},
"luminance": 0.07009
}Semantic roles & 50–950 ramp
primary
#2B3FAB
secondary
#C4B66E
accent
#CA45E3
background
#F7F7FC
surface
#EEEDF8
border
#C9C8D1
text
#0A0813
muted
#7C7B82