#403750
Closest named color: Onyx (#343A40). oklch(35.7% 0.044 300.7), rgb(64, 55, 80).
Aa
White text reads best on this color (11.16:1).
About this color
#403750 is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.044 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.039 away. White text reads best on it, at 11.16:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.88:1 |
| White text | 11.16:1 |
Values
| HEX | #403750 |
| RGB | rgb(64, 55, 80) |
| HSL | hsl(262, 19%, 26%) |
| OKLCH | oklch(35.7% 0.044 300.7) |
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 #403750 | 11.16:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #403750 | 1.88:1 | Fails | Lc 8.1 | Not readable |
| #403750 text on white | 11.16:1 | AAA | Lc 95.8 | Preferred for body text |
| #403750 text on black | 1.88:1 | Fails | Lc 0.0 | 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
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DBD7E4
oklch(88.6% 0.018 300)
-
Step 300
300
#C4BCD3
oklch(80.9% 0.033 301.5)
-
Step 400
400
#A699BD
oklch(70.6% 0.054 301.5)
-
Step 500
500
#9080AC
oklch(63% 0.067 301.1)
-
Step 600
600
#7A6998
oklch(55.5% 0.074 300.6)
-
Step 700
700
#675882
oklch(49.2% 0.068 300.3)
-
Step 800
800
#544869
oklch(42.7% 0.056 300.8)
-
Step 900
900 (this color)
#403750
oklch(35.7% 0.044 300.7)
-
Step 950
950
#292332
oklch(27% 0.029 302.8)
#403750 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) | #323B51 | 0.025 |
| Deuteranopia (no green cones) | #333B4F | 0.024 |
| Tritanopia (no blue cones) | #3D3B40 | 0.035 |
| Achromatopsia (no color) | #3B3B3B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403750
#403750
oklch(35.7% 0.044 300.7)
- #394025
#394025
oklch(35.7% 0.045 120.5)
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 #403750, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.039
- Charcoal Grey #3C4142 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.050
- Gunmetal #293241 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.053
- Space Cadet #2B2D42 ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.055
- Charcoal #264653 ΔE 0.056
Use #403750 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.