#40175E
Closest named color: Royal Purple (#4B006E). oklch(30.8% 0.121 307), rgb(64, 23, 94).
Aa
White text reads best on this color (13.97:1).
About this color
#40175E is a dark, moderately saturated purple. In OKLCH its lightness is 31%, its chroma 0.121 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.043 away. White text reads best on it, at 13.97:1.
| Hue family | Purples |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.50:1 |
| White text | 13.97:1 |
Values
| HEX | #40175E |
| RGB | rgb(64, 23, 94) |
| HSL | hsl(275, 61%, 23%) |
| OKLCH | oklch(30.8% 0.121 307) |
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 #40175E | 13.97:1 | AAA | Lc -103.2 | Preferred for body text |
| Black text on #40175E | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #40175E text on white | 13.97:1 | AAA | Lc 100.1 | Preferred for body text |
| #40175E text on black | 1.50:1 | 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
#F8F3FF
oklch(97.1% 0.017 304.8)
-
Step 100
100
#F1E4FF
oklch(93.7% 0.039 307.2)
-
Step 200
200
#E5CDFF
oklch(88.4% 0.072 306.7)
-
Step 300
300
#D6ABFF
oklch(80.9% 0.124 307.3)
-
Step 400
400
#C179FF
oklch(70.8% 0.197 306.9)
-
Step 500
500
#B348FF
oklch(63.1% 0.258 307.1)
-
Step 600
600
#A000F1
oklch(55.6% 0.286 306.9)
-
Step 700
700
#8700CC
oklch(49.1% 0.252 307)
-
Step 800
800
#6F00A9
oklch(42.7% 0.219 307)
-
Step 900
900
#5D038E
oklch(37.8% 0.192 307)
-
Step 950
950 (this color)
#40175E
oklch(30.8% 0.121 307)
#40175E 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) | #002B60 | 0.098 |
| Deuteranopia (no green cones) | #022C5C | 0.098 |
| Tritanopia (no blue cones) | #3B2738 | 0.086 |
| Achromatopsia (no color) | #2C2C2C | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40175E
#40175E
oklch(30.8% 0.121 307)
- #253600
#253600
oklch(30.6% 0.079 126.5)
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 #40175E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.043
- Plum Purple #4E0550 ΔE 0.046
- Deep Violet #490648 ΔE 0.050
- Eggplant Purple #430541 ΔE 0.059
- Indigo #4B0082 ΔE 0.067
- Dark Purple #35063E ΔE 0.070
- Grape Purple #5D1451 ΔE 0.070
- Deep Purple #36013F ΔE 0.072
Use #40175E 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.