#403B4F
Closest named color: Onyx (#343A40). oklch(36.6% 0.035 296.1), rgb(64, 59, 79).
Aa
White text reads best on this color (10.73:1).
About this color
#403B4F is a dark, muted purple. In OKLCH its lightness is 37%, its chroma 0.035 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.034 away. White text reads best on it, at 10.73:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.95:1 |
| White text | 10.73:1 |
Values
| HEX | #403B4F |
| RGB | rgb(64, 59, 79) |
| HSL | hsl(255, 14%, 27%) |
| OKLCH | oklch(36.6% 0.035 296.1) |
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 #403B4F | 10.73:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #403B4F | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #403B4F text on white | 10.73:1 | AAA | Lc 94.9 | Preferred for body text |
| #403B4F 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
#DAD7E2
oklch(88.5% 0.015 298.5)
-
Step 300
300
#C2BED0
oklch(81% 0.025 296)
-
Step 400
400
#A29CB8
oklch(70.7% 0.041 295.2)
-
Step 500
500
#8C83A6
oklch(63% 0.053 296.6)
-
Step 600
600
#766D92
oklch(55.7% 0.057 295.6)
-
Step 700
700
#635B7C
oklch(49.2% 0.053 295.5)
-
Step 800
800
#514A65
oklch(42.7% 0.045 296.3)
-
Step 900
900 (this color)
#403B4F
oklch(36.6% 0.035 296.1)
-
Step 950
950
#272430
oklch(26.9% 0.022 296.3)
#403B4F 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) | #373E50 | 0.016 |
| Deuteranopia (no green cones) | #373E4E | 0.017 |
| Tritanopia (no blue cones) | #3D3E42 | 0.028 |
| Achromatopsia (no color) | #3E3E3E | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B4F
#403B4F
oklch(36.6% 0.035 296.1)
- #3D412C
#3D412C
oklch(36.5% 0.035 116.9)
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 #403B4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.044
- Charcoal #264653 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.049
- Gunmetal #293241 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.060
- Space Cadet #2B2D42 ΔE 0.062
Use #403B4F 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.