#3D3999
Closest named color: Blueberry (#464196). oklch(40.9% 0.152 279.2), rgb(61, 57, 153).
Aa
White text reads best on this color (9.35:1).
About this color
#3D3999 is a dark, vivid blue. In OKLCH its lightness is 41%, its chroma 0.152 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.027 away. White text reads best on it, at 9.35:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.24:1 |
| White text | 9.35:1 |
Values
| HEX | #3D3999 |
| RGB | rgb(61, 57, 153) |
| HSL | hsl(243, 46%, 41%) |
| OKLCH | oklch(40.9% 0.152 279.2) |
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 #3D3999 | 9.35:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #3D3999 | 2.24:1 | Fails | Lc 12.8 | Not readable |
| #3D3999 text on white | 9.35:1 | AAA | Lc 91.2 | Preferred for body text |
| #3D3999 text on black | 2.24:1 | Fails | Lc -11.2 | 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
#E6E9FB
oklch(93.7% 0.024 278.4)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B4BBFA
oklch(80.9% 0.089 279.3)
-
Step 400
400
#8F95F7
oklch(70.7% 0.142 279.4)
-
Step 500
500
#7577F3
oklch(62.9% 0.181 279.1)
-
Step 600
600
#605CE2
oklch(55.5% 0.198 279.1)
-
Step 700
700
#504BC4
oklch(49% 0.183 279.1)
-
Step 800
800 (this color)
#3D3999
oklch(40.9% 0.152 279.2)
-
Step 900
900
#37367E
oklch(37.6% 0.119 279.7)
-
Step 950
950
#20214A
oklch(27.1% 0.074 279.2)
#3D3999 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) | #004A9C | 0.060 |
| Deuteranopia (no green cones) | #004397 | 0.055 |
| Tritanopia (no blue cones) | #005163 | 0.131 |
| Achromatopsia (no color) | #474747 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3999
#3D3999
oklch(40.9% 0.152 279.2)
- #564A00
#564A00
oklch(40.9% 0.085 98.6)
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 #3D3999, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.027
- Dark Slate Blue #483D8B ΔE 0.032
- Sapphire #2138AB ΔE 0.046
- Cobalt #1E488F ΔE 0.052
- Indigo Blue #3A18B1 ΔE 0.066
- Imperial Purple #480CA8 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.073
- Dusk Blue #26538D ΔE 0.075
Use #3D3999 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.