#2C3D33
Closest named color: Onyx (#343A40). oklch(34.2% 0.028 158.7), rgb(44, 61, 51).
Aa
White text reads best on this color (11.52:1).
About this color
#2C3D33 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 0.031 away. White text reads best on it, at 11.52:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.82:1 |
| White text | 11.52:1 |
Values
| HEX | #2C3D33 |
| RGB | rgb(44, 61, 51) |
| HSL | hsl(145, 16%, 21%) |
| OKLCH | oklch(34.2% 0.028 158.7) |
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 #2C3D33 | 11.52:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #2C3D33 | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #2C3D33 text on white | 11.52:1 | AAA | Lc 96.5 | Preferred for body text |
| #2C3D33 text on black | 1.82:1 | 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
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D3DCD6
oklch(88.6% 0.013 157)
-
Step 300
300
#B6C5BC
oklch(80.9% 0.021 159.6)
-
Step 400
400
#90A799
oklch(70.7% 0.033 158.7)
-
Step 500
500
#749280
oklch(63.2% 0.043 158.6)
-
Step 600
600
#5C7C69
oklch(55.6% 0.047 158.4)
-
Step 700
700
#4C6958
oklch(49.3% 0.044 158.6)
-
Step 800
800
#3E5548
oklch(42.6% 0.035 159.7)
-
Step 900
900 (this color)
#2C3D33
oklch(34.2% 0.028 158.7)
-
Step 950
950
#1F2923
oklch(26.9% 0.018 158.6)
#2C3D33 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) | #3D3A32 | 0.027 |
| Deuteranopia (no green cones) | #3A3834 | 0.027 |
| Tritanopia (no blue cones) | #293D3A | 0.012 |
| Achromatopsia (no color) | #393939 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C3D33
#2C3D33
oklch(34.2% 0.028 158.7)
- #42333D
#42333D
oklch(34.1% 0.027 338.8)
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 #2C3D33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.031
- Charcoal Grey #3C4142 ΔE 0.038
- Pakistan Green #283618 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.050
- Gunmetal #293241 ΔE 0.052
- Evergreen #05472A ΔE 0.053
- Charcoal #264653 ΔE 0.054
- Midnight Green #073B4C ΔE 0.056
Use #2C3D33 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.