#3D317D
Closest named color: Dark Slate Blue (#483D8B). oklch(37.1% 0.124 285.9), rgb(61, 49, 125).
Aa
White text reads best on this color (10.85:1).
About this color
#3D317D is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.124 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.043 away. White text reads best on it, at 10.85:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.93:1 |
| White text | 10.85:1 |
Values
| HEX | #3D317D |
| RGB | rgb(61, 49, 125) |
| HSL | hsl(249, 44%, 34%) |
| OKLCH | oklch(37.1% 0.124 285.9) |
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 #3D317D | 10.85:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #3D317D | 1.93:1 | Fails | Lc 9.1 | Not readable |
| #3D317D text on white | 10.85:1 | AAA | Lc 94.8 | Preferred for body text |
| #3D317D text on black | 1.93:1 | Fails | Lc -7.8 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E8FC
oklch(93.7% 0.027 285.9)
-
Step 200
200
#D5D5FA
oklch(88.5% 0.051 285.3)
-
Step 300
300
#BBB8FA
oklch(80.8% 0.093 286.2)
-
Step 400
400
#9A91F8
oklch(70.8% 0.148 286)
-
Step 500
500
#8371F5
oklch(63.1% 0.19 285.8)
-
Step 600
600
#6F55E3
oklch(55.6% 0.206 286)
-
Step 700
700
#5D44C6
oklch(49.1% 0.192 285.7)
-
Step 800
800
#4C39A0
oklch(42.7% 0.159 286)
-
Step 900
900 (this color)
#3D317D
oklch(37.1% 0.124 285.9)
-
Step 950
950
#241E4A
oklch(26.9% 0.079 286.1)
#3D317D 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) | #003F80 | 0.066 |
| Deuteranopia (no green cones) | #003B7B | 0.065 |
| Tritanopia (no blue cones) | #264252 | 0.102 |
| Achromatopsia (no color) | #3D3D3D | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D317D
#3D317D
oklch(37.1% 0.124 285.9)
- #464200
#464200
oklch(37.1% 0.079 105.8)
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 #3D317D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.043
- Blueberry #464196 ΔE 0.059
- Twilight Blue #0A437A ΔE 0.068
- Cobalt #1E488F ΔE 0.070
- Marine Blue #01386A ΔE 0.075
- Indigo #4B0082 ΔE 0.076
- Prussian Blue #1D3557 ΔE 0.084
- Sapphire #2138AB ΔE 0.085
Use #3D317D 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.