#3D287D
Closest named color: Indigo (#4B0082). oklch(35.6% 0.136 288.9), rgb(61, 40, 125).
Aa
White text reads best on this color (11.67:1).
About this color
#3D287D is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.136 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.058 away. White text reads best on it, at 11.67:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.79:1 |
| White text | 11.67:1 |
Values
| HEX | #3D287D |
| RGB | rgb(61, 40, 125) |
| HSL | hsl(255, 52%, 32%) |
| OKLCH | oklch(35.6% 0.136 288.9) |
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 #3D287D | 11.67:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #3D287D | 1.79:1 | Fails | Lc 7.5 | Not readable |
| #3D287D text on white | 11.67:1 | AAA | Lc 96.4 | Preferred for body text |
| #3D287D text on black | 1.79:1 | 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
#E9E7FD
oklch(93.6% 0.03 290)
-
Step 200
200
#D7D4FD
oklch(88.5% 0.056 288.5)
-
Step 300
300
#BEB6FF
oklch(80.9% 0.102 288.9)
-
Step 400
400
#9F8CFF
oklch(70.7% 0.164 289.1)
-
Step 500
500
#8A6AFD
oklch(63.1% 0.209 289)
-
Step 600
600
#764CEC
oklch(55.6% 0.227 288.9)
-
Step 700
700
#643BCE
oklch(49.2% 0.212 288.9)
-
Step 800
800
#5132A6
oklch(42.7% 0.175 289)
-
Step 900
900 (this color)
#3D287D
oklch(35.6% 0.136 288.9)
-
Step 950
950
#261C4D
oklch(26.9% 0.087 288.6)
#3D287D 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) | #003A80 | 0.073 |
| Deuteranopia (no green cones) | #00367B | 0.071 |
| Tritanopia (no blue cones) | #273D4F | 0.111 |
| Achromatopsia (no color) | #383838 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D287D
#3D287D
oklch(35.6% 0.136 288.9)
- #403F00
#403F00
oklch(35.7% 0.077 108.7)
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 #3D287D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.060
- Royal Purple #4B006E ΔE 0.070
- Blueberry #464196 ΔE 0.075
- Imperial Purple #480CA8 ΔE 0.078
- Midnight Blue #191970 ΔE 0.078
- Marine Blue #01386A ΔE 0.083
- Twilight Blue #0A437A ΔE 0.084
Use #3D287D 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.