#41378E
Closest named color: Dark Slate Blue (#483D8B). oklch(39.9% 0.139 283.4), rgb(65, 55, 142).
Aa
White text reads best on this color (9.71:1).
About this color
#41378E is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.139 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.021 away. White text reads best on it, at 9.71:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #41378E |
| RGB | rgb(65, 55, 142) |
| HSL | hsl(247, 44%, 39%) |
| OKLCH | oklch(39.9% 0.139 283.4) |
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 #41378E | 9.71:1 | AAA | Lc -96.4 | Preferred for body text |
| Black text on #41378E | 2.16:1 | Fails | Lc 11.8 | Not readable |
| #41378E text on white | 9.71:1 | AAA | Lc 92.2 | Preferred for body text |
| #41378E text on black | 2.16:1 | Fails | Lc -10.3 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E8FE
oklch(93.7% 0.03 283.7)
-
Step 200
200
#D3D5FF
oklch(88.5% 0.058 283)
-
Step 300
300
#B8B9FF
oklch(81% 0.098 283.3)
-
Step 400
400
#9591FF
oklch(70.8% 0.158 283.2)
-
Step 500
500
#7E6FFF
oklch(63% 0.206 283.5)
-
Step 600
600
#6A50F2
oklch(55.6% 0.23 283.3)
-
Step 700
700
#593ED3
oklch(49% 0.215 283.4)
-
Step 800
800
#4835AA
oklch(42.6% 0.177 283.3)
-
Step 900
900 (this color)
#41378E
oklch(39.9% 0.139 283.4)
-
Step 950
950
#221D4F
oklch(26.9% 0.089 283.2)
#41378E 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) | #004791 | 0.066 |
| Deuteranopia (no green cones) | #00418C | 0.064 |
| Tritanopia (no blue cones) | #214C5D | 0.118 |
| Achromatopsia (no color) | #444444 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #41378E
#41378E
oklch(39.9% 0.139 283.4)
- #504900
#504900
oklch(40% 0.084 103.2)
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 #41378E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.021
- Blueberry #464196 ΔE 0.029
- Cobalt #1E488F ΔE 0.056
- Sapphire #2138AB ΔE 0.063
- Rebecca Purple #663399 ΔE 0.069
- Twilight Blue #0A437A ΔE 0.074
- Imperial Purple #480CA8 ΔE 0.075
- Twilight #4E518B ΔE 0.076
Use #41378E 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.