#403676
Closest named color: Dark Slate Blue (#483D8B). oklch(37.8% 0.105 287.4), rgb(64, 54, 118).
Aa
White text reads best on this color (10.46:1).
About this color
#403676 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.105 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.041 away. White text reads best on it, at 10.46:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.00:1 |
| White text | 10.46:1 |
Values
| HEX | #403676 |
| RGB | rgb(64, 54, 118) |
| HSL | hsl(249, 37%, 34%) |
| OKLCH | oklch(37.8% 0.105 287.4) |
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 #403676 | 10.46:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #403676 | 2.00:1 | Fails | Lc 9.8 | Not readable |
| #403676 text on white | 10.46:1 | AAA | Lc 94.1 | Preferred for body text |
| #403676 text on black | 2.00:1 | Fails | Lc -8.5 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E8E8F9
oklch(93.6% 0.023 286)
-
Step 200
200
#D7D5F5
oklch(88.5% 0.044 288.3)
-
Step 300
300
#BDB9F2
oklch(80.9% 0.08 287.7)
-
Step 400
400
#9C93EB
oklch(70.7% 0.127 287.4)
-
Step 500
500
#8676E5
oklch(63.2% 0.162 287.4)
-
Step 600
600
#715CD3
oklch(55.7% 0.176 287.4)
-
Step 700
700
#5F4BB6
oklch(49.2% 0.162 287.5)
-
Step 800
800
#4D3E94
oklch(42.7% 0.136 287.2)
-
Step 900
900 (this color)
#403676
oklch(37.8% 0.105 287.4)
-
Step 950
950
#252045
oklch(27% 0.067 287.2)
#403676 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) | #194178 | 0.055 |
| Deuteranopia (no green cones) | #183E75 | 0.054 |
| Tritanopia (no blue cones) | #304450 | 0.089 |
| Achromatopsia (no color) | #3F3F3F | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403676
#403676
oklch(37.8% 0.105 287.4)
- #474400
#474400
oklch(37.7% 0.081 106.8)
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 #403676, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.059
- Twilight Blue #0A437A ΔE 0.064
- Cobalt #1E488F ΔE 0.068
- Marine Blue #01386A ΔE 0.074
- Prussian Blue #1D3557 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.079
- Light Navy #155084 ΔE 0.081
Use #403676 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.