#3D3640
Closest named color: Onyx (#343A40). oklch(34.4% 0.02 315.8), rgb(61, 54, 64).
Aa
White text reads best on this color (11.66:1).
About this color
#3D3640 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.019 away. White text reads best on it, at 11.66:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.80:1 |
| White text | 11.66:1 |
Values
| HEX | #3D3640 |
| RGB | rgb(61, 54, 64) |
| HSL | hsl(282, 8%, 23%) |
| OKLCH | oklch(34.4% 0.02 315.8) |
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 #3D3640 | 11.66:1 | AAA | Lc -100.5 | Preferred for body text |
| Black text on #3D3640 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #3D3640 text on white | 11.66:1 | AAA | Lc 96.8 | Preferred for body text |
| #3D3640 text on black | 1.80:1 | 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
#DBD7DD
oklch(88.4% 0.009 314.8)
-
Step 300
300
#C4BEC7
oklch(80.9% 0.014 314.7)
-
Step 400
400
#A69CAB
oklch(70.6% 0.024 314.7)
-
Step 500
500
#918496
oklch(63.1% 0.031 316.7)
-
Step 600
600
#7B6E81
oklch(55.7% 0.033 315.2)
-
Step 700
700
#685C6D
oklch(49.2% 0.03 316)
-
Step 800
800
#544B58
oklch(42.6% 0.024 315.5)
-
Step 900
900 (this color)
#3D3640
oklch(34.4% 0.02 315.8)
-
Step 950
950
#29252B
oklch(27.1% 0.012 314.6)
#3D3640 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) | #353840 | 0.015 |
| Deuteranopia (no green cones) | #363940 | 0.015 |
| Tritanopia (no blue cones) | #3D3739 | 0.014 |
| Achromatopsia (no color) | #383838 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D3640
#3D3640
oklch(34.4% 0.02 315.8)
- #343B31
#343B31
oklch(34.2% 0.02 136.2)
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 #3D3640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.019
- Charcoal Grey #3C4142 ΔE 0.035
- Gunmetal #293241 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
- Charcoal #264653 ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.062
Use #3D3640 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.