#403952
Closest named color: Onyx (#343A40). oklch(36.2% 0.043 297), rgb(64, 57, 82).
Aa
White text reads best on this color (10.90:1).
About this color
#403952 is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.043 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.040 away. White text reads best on it, at 10.90:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.043) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #403952 |
| RGB | rgb(64, 57, 82) |
| HSL | hsl(257, 18%, 27%) |
| OKLCH | oklch(36.2% 0.043 297) |
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 #403952 | 10.90:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #403952 | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #403952 text on white | 10.90:1 | AAA | Lc 95.3 | Preferred for body text |
| #403952 text on black | 1.92:1 | Fails | Lc -7.4 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E4
oklch(88.5% 0.018 296.6)
-
Step 300
300
#C2BDD4
oklch(81% 0.032 295.6)
-
Step 400
400
#A49ABE
oklch(70.7% 0.053 297.8)
-
Step 500
500
#8D81AD
oklch(63% 0.066 297)
-
Step 600
600
#786A99
oklch(55.6% 0.073 297.6)
-
Step 700
700
#655982
oklch(49.2% 0.066 297.4)
-
Step 800
800
#52496A
oklch(42.8% 0.055 296.5)
-
Step 900
900 (this color)
#403952
oklch(36.2% 0.043 297)
-
Step 950
950
#282432
oklch(27.1% 0.026 297.7)
#403952 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) | #333D53 | 0.023 |
| Deuteranopia (no green cones) | #343C51 | 0.021 |
| Tritanopia (no blue cones) | #3D3D42 | 0.035 |
| Achromatopsia (no color) | #3D3D3D | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403952
#403952
oklch(36.2% 0.043 297)
- #3C4126
#3C4126
oklch(36.3% 0.044 117.2)
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 #403952, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.050
- Charcoal #264653 ΔE 0.052
- Gunmetal #293241 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.059
Use #403952 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.