#343C33
Closest named color: Onyx (#343A40). oklch(34.6% 0.019 142.1), rgb(52, 60, 51).
Aa
White text reads best on this color (11.41:1).
About this color
#343C33 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.026 away. White text reads best on it, at 11.41:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.41:1 |
Values
| HEX | #343C33 |
| RGB | rgb(52, 60, 51) |
| HSL | hsl(113, 8%, 22%) |
| OKLCH | oklch(34.6% 0.019 142.1) |
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 #343C33 | 11.41:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #343C33 | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #343C33 text on white | 11.41:1 | AAA | Lc 96.3 | Preferred for body text |
| #343C33 text on black | 1.84:1 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD6
oklch(88.4% 0.007 145.5)
-
Step 300
300
#BCC3BB
oklch(80.9% 0.013 141.8)
-
Step 400
400
#99A497
oklch(70.6% 0.022 140.9)
-
Step 500
500
#808E7E
oklch(63.1% 0.029 141.7)
-
Step 600
600
#697867
oklch(55.5% 0.031 141.9)
-
Step 700
700
#586556
oklch(49.1% 0.028 141.4)
-
Step 800
800
#485346
oklch(42.8% 0.025 140.8)
-
Step 900
900 (this color)
#343C33
oklch(34.6% 0.019 142.1)
-
Step 950
950
#232823
oklch(27% 0.012 145.2)
#343C33 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) | #3D3A33 | 0.016 |
| Deuteranopia (no green cones) | #3B3933 | 0.015 |
| Tritanopia (no blue cones) | #343B39 | 0.012 |
| Achromatopsia (no color) | #3A3A3A | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343C33
#343C33
oklch(34.6% 0.019 142.1)
- #3E363F
#3E363F
oklch(34.5% 0.019 322.5)
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 #343C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.031
- Pakistan Green #283618 ΔE 0.049
- Gunmetal #293241 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Charcoal #264653 ΔE 0.055
- Dark Olive #373E02 ΔE 0.061
- Midnight Green #073B4C ΔE 0.062
Use #343C33 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.