#403172
Closest named color: Dark Slate Blue (#483D8B). oklch(36.6% 0.108 290.7), rgb(64, 49, 114).
Aa
White text reads best on this color (11.05:1).
About this color
#403172 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.108 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.053 away. White text reads best on it, at 11.05:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.90:1 |
| White text | 11.05:1 |
Values
| HEX | #403172 |
| RGB | rgb(64, 49, 114) |
| HSL | hsl(254, 40%, 32%) |
| OKLCH | oklch(36.6% 0.108 290.7) |
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 #403172 | 11.05:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #403172 | 1.90:1 | Fails | Lc 8.6 | Not readable |
| #403172 text on white | 11.05:1 | AAA | Lc 95.3 | Preferred for body text |
| #403172 text on black | 1.90:1 | Fails | Lc -7.3 | 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 900.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F5
oklch(88.5% 0.044 289.8)
-
Step 300
300
#C0B8F2
oklch(80.9% 0.081 290.8)
-
Step 400
400
#A191EB
oklch(70.7% 0.13 290.9)
-
Step 500
500
#8B73E4
oklch(63% 0.165 290.7)
-
Step 600
600
#7759D2
oklch(55.7% 0.179 290.9)
-
Step 700
700
#6448B6
oklch(49.1% 0.166 290.7)
-
Step 800
800
#513C93
oklch(42.7% 0.137 290.5)
-
Step 900
900 (this color)
#403172
oklch(36.6% 0.108 290.7)
-
Step 950
950
#271F45
oklch(27% 0.069 290.8)
#403172 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) | #113D74 | 0.063 |
| Deuteranopia (no green cones) | #143A71 | 0.060 |
| Tritanopia (no blue cones) | #323F4C | 0.089 |
| Achromatopsia (no color) | #3C3C3C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403172
#403172
oklch(36.6% 0.108 290.7)
- #414200
#414200
oklch(36.6% 0.08 110.7)
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 #403172, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.053
- Blueberry #464196 ΔE 0.071
- Twilight Blue #0A437A ΔE 0.072
- Prussian Blue #1D3557 ΔE 0.074
- Marine Blue #01386A ΔE 0.074
- Cobalt #1E488F ΔE 0.080
- Indigo #4B0082 ΔE 0.081
- Royal Purple #4B006E ΔE 0.083
Use #403172 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.