#3A3E9E
Closest named color: Blueberry (#464196). oklch(42% 0.153 275.8), rgb(58, 62, 158).
Aa
White text reads best on this color (8.88:1).
About this color
#3A3E9E is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.153 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.025 away. White text reads best on it, at 8.88:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.36:1 |
| White text | 8.88:1 |
Values
| HEX | #3A3E9E |
| RGB | rgb(58, 62, 158) |
| HSL | hsl(238, 46%, 42%) |
| OKLCH | oklch(42% 0.153 275.8) |
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 #3A3E9E | 8.88:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #3A3E9E | 2.36:1 | Fails | Lc 14.0 | Not readable |
| #3A3E9E text on white | 8.88:1 | AAA | Lc 89.9 | Fine for body text |
| #3A3E9E text on black | 2.36:1 | Fails | Lc -12.3 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FC
oklch(93.7% 0.026 276.4)
-
Step 200
200
#D0D7FB
oklch(88.5% 0.05 276.6)
-
Step 300
300
#B0BCFB
oklch(80.9% 0.09 275.9)
-
Step 400
400
#8997F9
oklch(70.7% 0.144 275.9)
-
Step 500
500
#6E7AF5
oklch(63.2% 0.182 275.7)
-
Step 600
600
#595FE4
oklch(55.7% 0.198 275.9)
-
Step 700
700
#494DC6
oklch(49.1% 0.184 275.8)
-
Step 800
800 (this color)
#3A3E9E
oklch(42% 0.153 275.8)
-
Step 900
900
#32387F
oklch(37.7% 0.118 275.5)
-
Step 950
950
#1D214A
oklch(26.9% 0.075 275.9)
#3A3E9E 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) | #004EA1 | 0.054 |
| Deuteranopia (no green cones) | #00469C | 0.048 |
| Tritanopia (no blue cones) | #005668 | 0.129 |
| Achromatopsia (no color) | #4A4A4A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3E9E
#3A3E9E
oklch(42% 0.153 275.8)
- #5B4C00
#5B4C00
oklch(41.9% 0.086 96)
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 #3A3E9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.025
- Dark Slate Blue #483D8B ΔE 0.038
- Sapphire #2138AB ΔE 0.041
- Cobalt #1E488F ΔE 0.046
- Dusk Blue #26538D ΔE 0.067
- Majorelle Blue #3F37C9 ΔE 0.070
- Blue Blue #2242C7 ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.071
Use #3A3E9E 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.