#2D3D37
Closest named color: Onyx (#343A40). oklch(34.4% 0.023 169.9), rgb(45, 61, 55).
Aa
White text reads best on this color (11.44:1).
About this color
#2D3D37 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.023. 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 11.44:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.83:1 |
| White text | 11.44:1 |
Values
| HEX | #2D3D37 |
| RGB | rgb(45, 61, 55) |
| HSL | hsl(158, 15%, 21%) |
| OKLCH | oklch(34.4% 0.023 169.9) |
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 #2D3D37 | 11.44:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #2D3D37 | 1.83:1 | Fails | Lc 7.5 | Not readable |
| #2D3D37 text on white | 11.44:1 | AAA | Lc 96.4 | Preferred for body text |
| #2D3D37 text on black | 1.83:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE9
oklch(93.6% 0.005 165)
-
Step 200
200
#D3DBD8
oklch(88.4% 0.01 171.8)
-
Step 300
300
#B6C4BF
oklch(80.8% 0.017 172.5)
-
Step 400
400
#90A79E
oklch(70.8% 0.029 169.9)
-
Step 500
500
#759186
oklch(63.2% 0.036 169.3)
-
Step 600
600
#5D7B70
oklch(55.6% 0.039 170.4)
-
Step 700
700
#4C685D
oklch(49.2% 0.037 168.6)
-
Step 800
800
#3F544C
oklch(42.6% 0.029 169.6)
-
Step 900
900 (this color)
#2D3D37
oklch(34.4% 0.023 169.9)
-
Step 950
950
#1F2925
oklch(27% 0.016 168.8)
#2D3D37 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) | #3C3B37 | 0.024 |
| Deuteranopia (no green cones) | #393937 | 0.022 |
| Tritanopia (no blue cones) | #293D3B | 0.008 |
| Achromatopsia (no color) | #3A3A3A | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D3D37
#2D3D37
oklch(34.4% 0.023 169.9)
- #43343B
#43343B
oklch(34.4% 0.024 348.7)
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 #2D3D37, 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 0.033
- Dark Blue Grey #1F3B4D ΔE 0.044
- Gunmetal #293241 ΔE 0.047
- Charcoal #264653 ΔE 0.048
- Pakistan Green #283618 ΔE 0.050
- Midnight Green #073B4C ΔE 0.052
- Evergreen #05472A ΔE 0.058
Use #2D3D37 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.