#3D337F
Closest named color: Dark Slate Blue (#483D8B). oklch(37.6% 0.124 284.8), rgb(61, 51, 127).
Aa
White text reads best on this color (10.61:1).
About this color
#3D337F is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.124 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 10.61:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #3D337F |
| RGB | rgb(61, 51, 127) |
| HSL | hsl(248, 43%, 35%) |
| OKLCH | oklch(37.6% 0.124 284.8) |
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 #3D337F | 10.61:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #3D337F | 1.97:1 | Fails | Lc 9.6 | Not readable |
| #3D337F text on white | 10.61:1 | AAA | Lc 94.3 | Preferred for body text |
| #3D337F text on black | 1.97:1 | Fails | Lc -8.3 | 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
#E7E8FC
oklch(93.6% 0.027 283.6)
-
Step 200
200
#D5D5FB
oklch(88.5% 0.052 285.3)
-
Step 300
300
#BAB9FB
oklch(81% 0.093 284.8)
-
Step 400
400
#9891F9
oklch(70.7% 0.149 285)
-
Step 500
500
#8172F5
oklch(63.1% 0.189 284.8)
-
Step 600
600
#6D56E4
oklch(55.7% 0.206 284.9)
-
Step 700
700
#5B45C6
oklch(49.1% 0.191 284.7)
-
Step 800
800
#4A3AA0
oklch(42.7% 0.158 284.7)
-
Step 900
900 (this color)
#3D337F
oklch(37.6% 0.124 284.8)
-
Step 950
950
#231F4A
oklch(27% 0.077 284.2)
#3D337F 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) | #004182 | 0.064 |
| Deuteranopia (no green cones) | #003C7D | 0.063 |
| Tritanopia (no blue cones) | #254454 | 0.102 |
| Achromatopsia (no color) | #3E3E3E | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D337F
#3D337F
oklch(37.6% 0.124 284.8)
- #484300
#484300
oklch(37.6% 0.08 104.8)
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 #3D337F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Blueberry #464196 ΔE 0.054
- Cobalt #1E488F ΔE 0.065
- Twilight Blue #0A437A ΔE 0.066
- Marine Blue #01386A ΔE 0.076
- Indigo #4B0082 ΔE 0.080
- Sapphire #2138AB ΔE 0.081
- Light Navy #155084 ΔE 0.085
Use #3D337F 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.