#403A5D
Closest named color: Dark Grey Blue (#29465B). oklch(37.1% 0.06 291.1), rgb(64, 58, 93).
Aa
White text reads best on this color (10.59:1).
About this color
#403A5D is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.060 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.048 away. White text reads best on it, at 10.59:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.060) |
| Temperature | in between |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #403A5D |
| RGB | rgb(64, 58, 93) |
| HSL | hsl(250, 23%, 30%) |
| OKLCH | oklch(37.1% 0.06 291.1) |
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 #403A5D | 10.59:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #403A5D | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #403A5D text on white | 10.59:1 | AAA | Lc 94.5 | Preferred for body text |
| #403A5D text on black | 1.98:1 | Fails | Lc -8.0 | 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 900.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E8F2
oklch(93.5% 0.013 290.7)
-
Step 200
200
#D9D7E9
oklch(88.6% 0.025 291)
-
Step 300
300
#C0BCDC
oklch(80.9% 0.045 291.1)
-
Step 400
400
#A099CA
oklch(70.6% 0.071 291)
-
Step 500
500
#8A7FBD
oklch(63.1% 0.092 291.7)
-
Step 600
600
#7468A9
oklch(55.6% 0.1 291.3)
-
Step 700
700
#615691
oklch(49% 0.093 291.1)
-
Step 800
800
#4F4776
oklch(42.7% 0.077 290.6)
-
Step 900
900 (this color)
#403A5D
oklch(37.1% 0.06 291.1)
-
Step 950
950
#262338
oklch(27% 0.039 290.1)
#403A5D 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) | #303F5E | 0.027 |
| Deuteranopia (no green cones) | #313E5C | 0.026 |
| Tritanopia (no blue cones) | #394047 | 0.050 |
| Achromatopsia (no color) | #3F3F3F | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403A5D
#403A5D
oklch(37.1% 0.06 291.1)
- #41431B
#41431B
oklch(37.1% 0.06 111.6)
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 #403A5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.048
- Onyx #343A40 ΔE 0.057
- Charcoal #264653 ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.059
- Gunmetal #293241 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.070
Use #403A5D 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.