#3D2F74
Closest named color: Dark Slate Blue (#483D8B). oklch(36% 0.114 288.7), rgb(61, 47, 116).
Aa
White text reads best on this color (11.30:1).
About this color
#3D2F74 is a dark, moderately saturated purple. In OKLCH its lightness is 36%, its chroma 0.114 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 11.30:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.85:1 |
| White text | 11.30:1 |
Values
| HEX | #3D2F74 |
| RGB | rgb(61, 47, 116) |
| HSL | hsl(252, 42%, 32%) |
| OKLCH | oklch(36% 0.114 288.7) |
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 #3D2F74 | 11.30:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #3D2F74 | 1.85:1 | Fails | Lc 8.1 | Not readable |
| #3D2F74 text on white | 11.30:1 | AAA | Lc 95.8 | Preferred for body text |
| #3D2F74 text on black | 1.85:1 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E8FA
oklch(93.7% 0.024 288.5)
-
Step 200
200
#D7D5F7
oklch(88.5% 0.047 288.1)
-
Step 300
300
#BEB8F5
oklch(80.9% 0.086 288.8)
-
Step 400
400
#9E91F0
oklch(70.7% 0.137 288.7)
-
Step 500
500
#8872EB
oklch(63% 0.176 288.7)
-
Step 600
600
#7457D9
oklch(55.6% 0.19 289)
-
Step 700
700
#6146BC
oklch(49% 0.177 288.7)
-
Step 800
800
#4F3B98
oklch(42.7% 0.145 288.6)
-
Step 900
900 (this color)
#3D2F74
oklch(36% 0.114 288.7)
-
Step 950
950
#261F47
oklch(27% 0.072 288.7)
#3D2F74 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) | #043C76 | 0.066 |
| Deuteranopia (no green cones) | #063973 | 0.065 |
| Tritanopia (no blue cones) | #2C3E4C | 0.094 |
| Achromatopsia (no color) | #3A3A3A | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D2F74
#3D2F74
oklch(36% 0.114 288.7)
- #414000
#414000
oklch(36.1% 0.078 108.8)
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 #3D2F74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Marine Blue #01386A ΔE 0.071
- Twilight Blue #0A437A ΔE 0.072
- Blueberry #464196 ΔE 0.073
- Prussian Blue #1D3557 ΔE 0.074
- Indigo #4B0082 ΔE 0.076
- Royal Purple #4B006E ΔE 0.080
- Cobalt #1E488F ΔE 0.081
Use #3D2F74 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.