#3D2378
Closest named color: Indigo (#4B0082). oklch(34.3% 0.137 291.6), rgb(61, 35, 120).
Aa
White text reads best on this color (12.28:1).
About this color
#3D2378 is a dark, moderately saturated purple. In OKLCH its lightness is 34%, its chroma 0.137 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.051 away. White text reads best on it, at 12.28:1.
| Hue family | Purples |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.71:1 |
| White text | 12.28:1 |
Values
| HEX | #3D2378 |
| RGB | rgb(61, 35, 120) |
| HSL | hsl(258, 55%, 30%) |
| OKLCH | oklch(34.3% 0.137 291.6) |
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 #3D2378 | 12.28:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #3D2378 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #3D2378 text on white | 12.28:1 | AAA | Lc 97.4 | Preferred for body text |
| #3D2378 text on black | 1.71:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FD
oklch(93.7% 0.03 292.1)
-
Step 200
200
#D9D3FD
oklch(88.5% 0.058 291.7)
-
Step 300
300
#C1B5FE
oklch(80.9% 0.102 291.5)
-
Step 400
400
#A38BFD
oklch(70.7% 0.163 291.3)
-
Step 500
500
#8F68FB
oklch(63.1% 0.209 291.5)
-
Step 600
600
#7C49EA
oklch(55.6% 0.228 291.8)
-
Step 700
700
#6938CC
oklch(49.1% 0.213 291.7)
-
Step 800
800
#5530A5
oklch(42.7% 0.176 291.6)
-
Step 900
900 (this color)
#3D2378
oklch(34.3% 0.137 291.6)
-
Step 950
950
#281B4C
oklch(26.8% 0.087 291.7)
#3D2378 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) | #00367B | 0.077 |
| Deuteranopia (no green cones) | #003376 | 0.076 |
| Tritanopia (no blue cones) | #2B384A | 0.109 |
| Achromatopsia (no color) | #353535 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D2378
#3D2378
oklch(34.3% 0.137 291.6)
- #3A3C00
#3A3C00
oklch(34.3% 0.076 111.9)
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 #3D2378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.051
- Royal Purple #4B006E ΔE 0.058
- Midnight Blue #191970 ΔE 0.072
- Dark Slate Blue #483D8B ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.083
- Marine Blue #01386A ΔE 0.087
- Marine #042E60 ΔE 0.088
- Blueberry #464196 ΔE 0.088
Use #3D2378 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.