#3B4298
Closest named color: Blueberry (#464196). oklch(42.4% 0.139 275.3), rgb(59, 66, 152).
Aa
White text reads best on this color (8.68:1).
About this color
#3B4298 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.139 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.017 away. White text reads best on it, at 8.68:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #3B4298 |
| RGB | rgb(59, 66, 152) |
| HSL | hsl(235, 44%, 41%) |
| OKLCH | oklch(42.4% 0.139 275.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #3B4298 | 8.68:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #3B4298 | 2.41:1 | Fails | Lc 14.5 | Not readable |
| #3B4298 text on white | 8.68:1 | AAA | Lc 89.5 | Fine for body text |
| #3B4298 text on black | 2.41:1 | Fails | Lc -12.8 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F8
oklch(88.4% 0.046 276)
-
Step 300
300
#B1BDF6
oklch(80.9% 0.082 275.2)
-
Step 400
400
#8A99F1
oklch(70.8% 0.13 275.2)
-
Step 500
500
#6F7DEC
oklch(63.2% 0.165 275.2)
-
Step 600
600
#5963DA
oklch(55.6% 0.18 275.3)
-
Step 700
700
#4951BD
oklch(49.1% 0.167 275.2)
-
Step 800
800 (this color)
#3B4298
oklch(42.4% 0.139 275.3)
-
Step 900
900
#333A7A
oklch(37.8% 0.108 275.3)
-
Step 950
950
#1D2247
oklch(26.9% 0.068 275)
#3B4298 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #004F9B | 0.051 |
| Deuteranopia (no green cones) | #004796 | 0.048 |
| Tritanopia (no blue cones) | #005666 | 0.120 |
| Achromatopsia (no color) | #4B4B4B | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B4298
#3B4298
oklch(42.4% 0.139 275.3)
- #5D4D00
#5D4D00
oklch(42.4% 0.087 95.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #3B4298, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.017
- Dark Slate Blue #483D8B ΔE 0.030
- Cobalt #1E488F ΔE 0.038
- Sapphire #2138AB ΔE 0.053
- Dusk Blue #26538D ΔE 0.054
- Twilight #4E518B ΔE 0.059
- Light Navy #155084 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.071
Use #3B4298 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.