#3F2976
Closest named color: Indigo (#4B0082). oklch(35.3% 0.126 291.9), rgb(63, 41, 118).
Aa
White text reads best on this color (11.73:1).
About this color
#3F2976 is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.126 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.061 away. White text reads best on it, at 11.73:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.79:1 |
| White text | 11.73:1 |
Values
| HEX | #3F2976 |
| RGB | rgb(63, 41, 118) |
| HSL | hsl(257, 48%, 31%) |
| OKLCH | oklch(35.3% 0.126 291.9) |
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 #3F2976 | 11.73:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #3F2976 | 1.79:1 | Fails | Lc 7.3 | Not readable |
| #3F2976 text on white | 11.73:1 | AAA | Lc 96.5 | Preferred for body text |
| #3F2976 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
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#D9D4FA
oklch(88.6% 0.052 291.3)
-
Step 300
300
#C1B6F9
oklch(80.9% 0.094 291.7)
-
Step 400
400
#A38DF6
oklch(70.7% 0.151 291.7)
-
Step 500
500
#8F6CF2
oklch(63.1% 0.193 292)
-
Step 600
600
#7B4FE1
oklch(55.6% 0.21 292)
-
Step 700
700
#683FC3
oklch(49.2% 0.194 292)
-
Step 800
800
#54359E
oklch(42.7% 0.161 291.7)
-
Step 900
900 (this color)
#3F2976
oklch(35.3% 0.126 291.9)
-
Step 950
950
#281D49
oklch(27% 0.079 291.8)
#3F2976 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) | #003978 | 0.076 |
| Deuteranopia (no green cones) | #003674 | 0.075 |
| Tritanopia (no blue cones) | #2F3B4B | 0.101 |
| Achromatopsia (no color) | #383838 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2976
#3F2976
oklch(35.3% 0.126 291.9)
- #3D3F00
#3D3F00
oklch(35.4% 0.078 111.8)
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 #3F2976, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.062
- Royal Purple #4B006E ΔE 0.066
- Blueberry #464196 ΔE 0.079
- Midnight Blue #191970 ΔE 0.081
- Marine Blue #01386A ΔE 0.081
- Prussian Blue #1D3557 ΔE 0.084
- Twilight Blue #0A437A ΔE 0.085
Use #3F2976 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.