#403B60
Closest named color: Dark Grey Blue (#29465B). oklch(37.4% 0.063 289.2), rgb(64, 59, 96).
Aa
White text reads best on this color (10.43:1).
About this color
#403B60 is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.063 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.048 away. White text reads best on it, at 10.43:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.01:1 |
| White text | 10.43:1 |
Values
| HEX | #403B60 |
| RGB | rgb(64, 59, 96) |
| HSL | hsl(248, 24%, 30%) |
| OKLCH | oklch(37.4% 0.063 289.2) |
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 #403B60 | 10.43:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #403B60 | 2.01:1 | Fails | Lc 9.7 | Not readable |
| #403B60 text on white | 10.43:1 | AAA | Lc 94.2 | Preferred for body text |
| #403B60 text on black | 2.01:1 | Fails | Lc -8.4 | 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
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BFBCDE
oklch(80.9% 0.048 289.3)
-
Step 400
400
#9F99CD
oklch(70.7% 0.075 289.6)
-
Step 500
500
#887FC0
oklch(63% 0.097 289.7)
-
Step 600
600
#7268AC
oklch(55.6% 0.104 289.3)
-
Step 700
700
#605694
oklch(49.1% 0.098 289.7)
-
Step 800
800
#4E4778
oklch(42.7% 0.08 289.1)
-
Step 900
900 (this color)
#403B60
oklch(37.4% 0.063 289.2)
-
Step 950
950
#262339
oklch(27% 0.04 289.7)
#403B60 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) | #304061 | 0.027 |
| Deuteranopia (no green cones) | #303F5F | 0.027 |
| Tritanopia (no blue cones) | #384249 | 0.053 |
| Achromatopsia (no color) | #404040 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B60
#403B60
oklch(37.4% 0.063 289.2)
- #434418
#434418
oklch(37.5% 0.064 110.3)
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 #403B60, 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
- Charcoal #264653 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.059
- Dark Blue Grey #1F3B4D ΔE 0.061
- Onyx #343A40 ΔE 0.061
- Charcoal Grey #3C4142 ΔE 0.062
- Twilight Blue #0A437A ΔE 0.069
- Gunmetal #293241 ΔE 0.071
Use #403B60 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.