#403999
Closest named color: Blueberry (#464196). oklch(41.1% 0.151 280.7), rgb(64, 57, 153).
Aa
White text reads best on this color (9.27:1).
About this color
#403999 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.151 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.024 away. White text reads best on it, at 9.27:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.151) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #403999 |
| RGB | rgb(64, 57, 153) |
| HSL | hsl(244, 46%, 41%) |
| OKLCH | oklch(41.1% 0.151 280.7) |
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 #403999 | 9.27:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #403999 | 2.26:1 | Fails | Lc 13.0 | Not readable |
| #403999 text on white | 9.27:1 | AAA | Lc 91.0 | Preferred for body text |
| #403999 text on black | 2.26:1 | Fails | Lc -11.3 | 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 800.
-
Step 50
50
#F4F5FE
oklch(97.2% 0.012 281.1)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B6BBF9
oklch(81% 0.088 280.7)
-
Step 400
400
#9195F6
oklch(70.8% 0.14 280.4)
-
Step 500
500
#7977F2
oklch(63.2% 0.179 280.7)
-
Step 600
600
#645BE1
oklch(55.5% 0.197 280.9)
-
Step 700
700
#534AC4
oklch(49.1% 0.183 280.5)
-
Step 800
800 (this color)
#403999
oklch(41.1% 0.151 280.7)
-
Step 900
900
#38367E
oklch(37.7% 0.118 280.3)
-
Step 950
950
#21204A
oklch(27% 0.076 281.1)
#403999 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) | #004B9C | 0.064 |
| Deuteranopia (no green cones) | #004497 | 0.060 |
| Tritanopia (no blue cones) | #0E5063 | 0.129 |
| Achromatopsia (no color) | #474747 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403999
#403999
oklch(41.1% 0.151 280.7)
- #554B00
#554B00
oklch(41% 0.085 100.6)
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 #403999, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.024
- Dark Slate Blue #483D8B ΔE 0.030
- Sapphire #2138AB ΔE 0.050
- Cobalt #1E488F ΔE 0.055
- Indigo Blue #3A18B1 ΔE 0.068
- Rebecca Purple #663399 ΔE 0.068
- Imperial Purple #480CA8 ΔE 0.070
- Twilight #4E518B ΔE 0.075
Use #403999 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.