#343B30
Closest named color: Onyx (#343A40). oklch(34.2% 0.021 134.1), rgb(52, 59, 48).
Aa
White text reads best on this color (11.57:1).
About this color
#343B30 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.029 away. White text reads best on it, at 11.57:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.81:1 |
| White text | 11.57:1 |
Values
| HEX | #343B30 |
| RGB | rgb(52, 59, 48) |
| HSL | hsl(98, 10%, 21%) |
| OKLCH | oklch(34.2% 0.021 134.1) |
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 #343B30 | 11.57:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #343B30 | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #343B30 text on white | 11.57:1 | AAA | Lc 96.7 | Preferred for body text |
| #343B30 text on black | 1.81:1 | 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
#E8EAE7
oklch(93.5% 0.005 134.9)
-
Step 200
200
#D7DAD5
oklch(88.5% 0.007 132.4)
-
Step 300
300
#BCC3B9
oklch(80.9% 0.016 136.1)
-
Step 400
400
#9AA495
oklch(70.6% 0.024 135)
-
Step 500
500
#828E7A
oklch(63.1% 0.032 132.8)
-
Step 600
600
#6B7863
oklch(55.6% 0.035 133.5)
-
Step 700
700
#596552
oklch(49.1% 0.033 134)
-
Step 800
800
#495244
oklch(42.6% 0.025 134.3)
-
Step 900
900 (this color)
#343B30
oklch(34.2% 0.021 134.1)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#343B30 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) | #3C392F | 0.014 |
| Deuteranopia (no green cones) | #3B3930 | 0.013 |
| Tritanopia (no blue cones) | #343A38 | 0.015 |
| Achromatopsia (no color) | #393939 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343B30
#343B30
oklch(34.2% 0.021 134.1)
- #3C3540
#3C3540
oklch(34.1% 0.021 313.3)
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 #343B30, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.036
- Pakistan Green #283618 ΔE 0.044
- Gunmetal #293241 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.056
- Dark Olive #373E02 ΔE 0.058
- Charcoal #264653 ΔE 0.059
- Evergreen #05472A ΔE 0.062
Use #343B30 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.