#3A3545
Closest named color: Onyx (#343A40). oklch(34.1% 0.028 299.2), rgb(58, 53, 69).
Aa
White text reads best on this color (11.83:1).
About this color
#3A3545 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.023 away. White text reads best on it, at 11.83:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.77:1 |
| White text | 11.83:1 |
Values
| HEX | #3A3545 |
| RGB | rgb(58, 53, 69) |
| HSL | hsl(259, 13%, 24%) |
| OKLCH | oklch(34.1% 0.028 299.2) |
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 #3A3545 | 11.83:1 | AAA | Lc -100.7 | Preferred for body text |
| Black text on #3A3545 | 1.77:1 | Fails | Lc 0.0 | Not readable |
| #3A3545 text on white | 11.83:1 | AAA | Lc 97.2 | Preferred for body text |
| #3A3545 text on black | 1.77:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EAE9ED
oklch(93.6% 0.005 297.7)
-
Step 200
200
#DAD7E0
oklch(88.4% 0.013 301.3)
-
Step 300
300
#C2BECD
oklch(80.9% 0.021 298.1)
-
Step 400
400
#A39CB3
oklch(70.6% 0.034 299.4)
-
Step 500
500
#8D84A1
oklch(63.1% 0.044 299.3)
-
Step 600
600
#776D8C
oklch(55.5% 0.049 299.6)
-
Step 700
700
#645B77
oklch(49% 0.045 299.4)
-
Step 800
800
#524B60
oklch(42.8% 0.035 300.2)
-
Step 900
900 (this color)
#3A3545
oklch(34.1% 0.028 299.2)
-
Step 950
950
#28252E
oklch(27.2% 0.017 300.5)
#3A3545 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) | #323746 | 0.014 |
| Deuteranopia (no green cones) | #333745 | 0.013 |
| Tritanopia (no blue cones) | #38373A | 0.023 |
| Achromatopsia (no color) | #373737 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3545
#3A3545
oklch(34.1% 0.028 299.2)
- #363A2A
#363A2A
oklch(34% 0.027 119.3)
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 #3A3545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.023
- Gunmetal #293241 ΔE 0.032
- Space Cadet #2B2D42 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.041
- Charcoal Grey #3C4142 ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.052
- Charcoal #264653 ΔE 0.056
- Dark Grey Blue #29465B ΔE 0.059
Use #3A3545 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.