#403F6D
Closest named color: Dark Grey Blue (#29465B). oklch(39.1% 0.077 283.2), rgb(64, 63, 109).
Aa
White text reads best on this color (9.76:1).
About this color
#403F6D is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.077 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.053 away. White text reads best on it, at 9.76:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.14:1 |
| White text | 9.76:1 |
Values
| HEX | #403F6D |
| RGB | rgb(64, 63, 109) |
| HSL | hsl(241, 27%, 34%) |
| OKLCH | oklch(39.1% 0.077 283.2) |
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 #403F6D | 9.76:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #403F6D | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #403F6D text on white | 9.76:1 | AAA | Lc 92.6 | Preferred for body text |
| #403F6D text on black | 2.14:1 | Fails | Lc -9.9 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D6D7EE
oklch(88.5% 0.031 283.8)
-
Step 300
300
#BBBCE5
oklch(80.8% 0.058 283.9)
-
Step 400
400
#9899D9
oklch(70.6% 0.093 283.1)
-
Step 500
500
#807FCE
oklch(63.1% 0.117 283.1)
-
Step 600
600
#6A67BB
oklch(55.6% 0.128 283)
-
Step 700
700
#5955A1
oklch(49.1% 0.119 283.5)
-
Step 800
800
#484683
oklch(42.7% 0.099 282.8)
-
Step 900
900 (this color)
#403F6D
oklch(39.1% 0.077 283.2)
-
Step 950
950
#23233D
oklch(27% 0.048 282.7)
#403F6D 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) | #2F456F | 0.028 |
| Deuteranopia (no green cones) | #2D426C | 0.028 |
| Tritanopia (no blue cones) | #334850 | 0.067 |
| Achromatopsia (no color) | #444444 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403F6D
#403F6D
oklch(39.1% 0.077 283.2)
- #4D4709
#4D4709
oklch(39.2% 0.077 103.5)
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 #403F6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.054
- Twilight Blue #0A437A ΔE 0.058
- Charcoal #264653 ΔE 0.066
- Light Navy #155084 ΔE 0.067
- Cobalt #1E488F ΔE 0.068
- Blueberry #464196 ΔE 0.069
- Dusk #4E5481 ΔE 0.070
Use #403F6D 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.