#403B4D
Closest named color: Onyx (#343A40). oklch(36.5% 0.031 297.6), rgb(64, 59, 77).
Aa
White text reads best on this color (10.76:1).
About this color
#403B4D is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.031 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.032 away. White text reads best on it, at 10.76:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #403B4D |
| RGB | rgb(64, 59, 77) |
| HSL | hsl(257, 13%, 27%) |
| OKLCH | oklch(36.5% 0.031 297.6) |
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 #403B4D | 10.76:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #403B4D | 1.95:1 | Fails | Lc 8.9 | Not readable |
| #403B4D text on white | 10.76:1 | AAA | Lc 95.0 | Preferred for body text |
| #403B4D text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#EAE9EE
oklch(93.6% 0.007 295.4)
-
Step 200
200
#DAD7E1
oklch(88.4% 0.014 299.8)
-
Step 300
300
#C2BECE
oklch(81% 0.023 297.3)
-
Step 400
400
#A39CB6
oklch(70.7% 0.038 297.7)
-
Step 500
500
#8C84A3
oklch(63.1% 0.047 296.9)
-
Step 600
600
#766D8E
oklch(55.5% 0.051 297.2)
-
Step 700
700
#645B79
oklch(49.1% 0.048 298.4)
-
Step 800
800
#514A63
oklch(42.6% 0.042 297.4)
-
Step 900
900 (this color)
#403B4D
oklch(36.5% 0.031 297.6)
-
Step 950
950
#27242F
oklch(26.8% 0.021 297.5)
#403B4D 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) | #373E4E | 0.016 |
| Deuteranopia (no green cones) | #383D4C | 0.015 |
| Tritanopia (no blue cones) | #3E3E41 | 0.026 |
| Achromatopsia (no color) | #3E3E3E | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B4D
#403B4D
oklch(36.5% 0.031 297.6)
- #3D412E
#3D412E
oklch(36.6% 0.032 117.6)
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 #403B4D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.045
- Charcoal #264653 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.048
- Gunmetal #293241 ΔE 0.053
- Prussian Blue #1D3557 ΔE 0.061
- Space Cadet #2B2D42 ΔE 0.061
Use #403B4D 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.