#403A46
Closest named color: Onyx (#343A40). oklch(35.9% 0.022 307.8), rgb(64, 58, 70).
Aa
White text reads best on this color (10.98:1).
About this color
#403A46 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.024 away. White text reads best on it, at 10.98:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.91:1 |
| White text | 10.98:1 |
Values
| HEX | #403A46 |
| RGB | rgb(64, 58, 70) |
| HSL | hsl(270, 9%, 25%) |
| OKLCH | oklch(35.9% 0.022 307.8) |
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 #403A46 | 10.98:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #403A46 | 1.91:1 | Fails | Lc 8.5 | Not readable |
| #403A46 text on white | 10.98:1 | AAA | Lc 95.4 | Preferred for body text |
| #403A46 text on black | 1.91:1 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EBE9EC
oklch(93.6% 0.005 314.8)
-
Step 200
200
#DBD8DE
oklch(88.6% 0.009 308.4)
-
Step 300
300
#C3BEC9
oklch(80.9% 0.016 306.4)
-
Step 400
400
#A59DAE
oklch(70.8% 0.026 306.8)
-
Step 500
500
#8F849A
oklch(63% 0.035 307.8)
-
Step 600
600
#796E84
oklch(55.6% 0.036 307.7)
-
Step 700
700
#665C70
oklch(49.2% 0.034 307.7)
-
Step 800
800
#534B5B
oklch(42.7% 0.028 307.7)
-
Step 900
900 (this color)
#403A46
oklch(35.9% 0.022 307.8)
-
Step 950
950
#28252C
oklch(27.1% 0.013 304.9)
#403A46 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) | #383C47 | 0.014 |
| Deuteranopia (no green cones) | #393C46 | 0.013 |
| Tritanopia (no blue cones) | #3F3B3E | 0.016 |
| Achromatopsia (no color) | #3C3C3C | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403A46
#403A46
oklch(35.9% 0.022 307.8)
- #3A3F33
#3A3F33
oklch(35.9% 0.021 125.9)
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 #403A46, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.024
- Charcoal Grey #3C4142 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.048
- Charcoal #264653 ΔE 0.049
- Gunmetal #293241 ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.065
Use #403A46 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.