#331F5B
Closest named color: Midnight Blue (#191970). oklch(30.1% 0.103 294.8), rgb(51, 31, 91).
Aa
White text reads best on this color (14.11:1).
About this color
#331F5B is a dark, moderately saturated purple. In OKLCH its lightness is 30%, its chroma 0.103 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.063 away. White text reads best on it, at 14.11:1.
| Hue family | Purples |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.103) |
| Temperature | in between |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.48:1 |
| White text | 14.11:1 |
Values
| HEX | #331F5B |
| RGB | rgb(51, 31, 91) |
| HSL | hsl(260, 49%, 24%) |
| OKLCH | oklch(30.1% 0.103 294.8) |
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 #331F5B | 14.11:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #331F5B | 1.48:1 | Fails | Lc 0.0 | Not readable |
| #331F5B text on white | 14.11:1 | AAA | Lc 100.5 | Preferred for body text |
| #331F5B text on black | 1.48:1 | 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 950.
-
Step 50
50
#F6F4FF
oklch(97.2% 0.015 294.5)
-
Step 100
100
#EBE6FF
oklch(93.6% 0.034 294.9)
-
Step 200
200
#DBD2FF
oklch(88.5% 0.062 294.3)
-
Step 300
300
#C5B3FF
oklch(80.9% 0.107 294.8)
-
Step 400
400
#A987FF
oklch(70.7% 0.172 294.7)
-
Step 500
500
#9761FF
oklch(63.1% 0.224 294.9)
-
Step 600
600
#8630FC
oklch(55.6% 0.27 294.7)
-
Step 700
700
#721DDC
oklch(49.1% 0.252 294.6)
-
Step 800
800
#5D1EB1
oklch(42.7% 0.208 295.1)
-
Step 900
900
#4B238C
oklch(37.7% 0.162 294.7)
-
Step 950
950 (this color)
#331F5B
oklch(30.1% 0.103 294.8)
#331F5B 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) | #002C5D | 0.068 |
| Deuteranopia (no green cones) | #002A5A | 0.068 |
| Tritanopia (no blue cones) | #292C39 | 0.081 |
| Achromatopsia (no color) | #2B2B2B | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #331F5B
#331F5B
oklch(30.1% 0.103 294.8)
- #2D3200
#2D3200
oklch(30.2% 0.069 115.7)
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 #331F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.067
- Marine #042E60 ΔE 0.067
- Prussian Blue #1D3557 ΔE 0.070
- Deep Violet #490648 ΔE 0.070
- Royal Purple #4B006E ΔE 0.070
- Plum Purple #4E0550 ΔE 0.072
Use #331F5B 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.