#2A3FB5#2A3FB5
#2A3FB5 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.187 H 268.9°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).
Color values
| HEX | #2A3FB5 |
|---|---|
| RGB | rgb(42, 63, 181) |
| HSL | hsl(231, 62%, 44%) |
| HSV | hsv(231, 77%, 71%) |
| CMYK | cmyk(76.8%, 65.2%, 0%, 29%) |
| CIE-LAB | lab(32.66, 34.43, -64.58) |
| CIE-LCH | lch(32.66, 73.18, 298.06°) |
| OKLab | oklab(43.31% -0.0034 -0.1868) |
| OKLCH | oklch(43.31% 0.187 268.9) |
| XYZ | xyz(11.0700, 7.3822, 44.5486) |
| Luminance | 0.0738 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 2.41
Blue Blue
#2242C7
ΔE00 2.46
Ocean Blue
#4F42B5
ΔE00 4.71
Cobalt
#0047AB
ΔE00 5.06
Blue (survey)
#0343DF
ΔE00 5.29
Blueberry
#464196
ΔE00 5.89
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#2A3FB5 #B5A02A
analogous
#2A84B5 #2A3FB5 #5A2AB5
triadic
#2A3FB5 #B52A3F #3FB52A
tetradic
#2A3FB5 #B52A84 #B5A02A #2AB55A
square
#2A3FB5 #B52A84 #B5A02A #2AB55A
split-complementary
#2A3FB5 #B55A2A #84B52A
monochromatic
#131C52 #1E2E83 #2A3FB5 #485DD4 #7989E0
Accessibility & contrast
On white
8.48
#2A3FB5 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.48
#2A3FB5 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #2A3FB5
8.48:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##2A3FB5 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##2A3FB5 | 1.00 | 8.48 | 2.48 | 8.48 |
| #FFFFFF | 8.48 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.48 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.48 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0054B9
Deuteranopia (green-blind)
#0046B3
Tritanopia (blue-blind)
#005E74
Achromatopsia (no color)
#4D4D4D
Design tokens & code
CSS
--color: #2a3fb5; /* rgb */ color: rgb(42, 63, 181); /* oklch */ color: oklch(43.3% 0.187 268.9);
Tailwind
colors: {
custom: {
50: '#7a74cc',
500: '#2a3fb5',
950: '#000000',
},
}SCSS
$custom: #2a3fb5; $custom-light: #7a74cc; $custom-dark: #000000;
JSON
{
"hex": "#2a3fb5",
"rgb": {
"r": 42,
"g": 63,
"b": 181
},
"hsl": {
"h": 230.935,
"s": 62.332,
"l": 43.725
},
"oklch": {
"l": 0.43312,
"c": 0.18685,
"h": 268.9
},
"luminance": 0.07383
}Semantic roles & 50–950 ramp
primary
#2A3FB5
secondary
#C8BB73
accent
#CD42E5
background
#F8F7FC
surface
#EFEDF9
border
#CAC8D2
text
#0B0813
muted
#7C7B82