#3D303C
Closest named color: Onyx (#343A40). oklch(32.8% 0.027 328.7), rgb(61, 48, 60).
Aa
White text reads best on this color (12.45:1).
About this color
#3D303C is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.033 away. White text reads best on it, at 12.45:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.68:1 |
| White text | 12.45:1 |
Values
| HEX | #3D303C |
| RGB | rgb(61, 48, 60) |
| HSL | hsl(305, 12%, 21%) |
| OKLCH | oklch(32.8% 0.027 328.7) |
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 #3D303C | 12.45:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #3D303C | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #3D303C text on white | 12.45:1 | AAA | Lc 98.3 | Preferred for body text |
| #3D303C text on black | 1.68:1 | 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
#ECE8EC
oklch(93.5% 0.007 325.6)
-
Step 200
200
#DED6DD
oklch(88.4% 0.013 329.6)
-
Step 300
300
#C8BCC7
oklch(80.8% 0.02 328.3)
-
Step 400
400
#AD9AAB
oklch(70.8% 0.033 329.3)
-
Step 500
500
#988196
oklch(63.1% 0.041 328.8)
-
Step 600
600
#836A81
oklch(55.6% 0.046 328.8)
-
Step 700
700
#6F586D
oklch(49.1% 0.044 329.1)
-
Step 800
800
#5A4859
oklch(42.7% 0.036 328)
-
Step 900
900 (this color)
#3D303C
oklch(32.8% 0.027 328.7)
-
Step 950
950
#2B232B
oklch(26.9% 0.019 326.1)
#3D303C 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) | #2F333D | 0.025 |
| Deuteranopia (no green cones) | #32353C | 0.024 |
| Tritanopia (no blue cones) | #3E3134 | 0.016 |
| Achromatopsia (no color) | #343434 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D303C
#3D303C
oklch(32.8% 0.027 328.7)
- #2B392D
#2B392D
oklch(32.8% 0.028 148.9)
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 #3D303C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.033
- Gunmetal #293241 ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.065
- Midnight Green #073B4C ΔE 0.070
- Oxford Blue #1B263B ΔE 0.071
Use #3D303C 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.