#343B2F
Closest named color: Onyx (#343A40). oklch(34.2% 0.023 132.3), rgb(52, 59, 47).
Aa
White text reads best on this color (11.58:1).
About this color
#343B2F 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 0.031 away. White text reads best on it, at 11.58:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.81:1 |
| White text | 11.58:1 |
Values
| HEX | #343B2F |
| RGB | rgb(52, 59, 47) |
| HSL | hsl(95, 11%, 21%) |
| OKLCH | oklch(34.2% 0.023 132.3) |
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 #343B2F | 11.58:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #343B2F | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #343B2F text on white | 11.58:1 | AAA | Lc 96.7 | Preferred for body text |
| #343B2F 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
#D7DAD4
oklch(88.4% 0.009 128.6)
-
Step 300
300
#BCC3B8
oklch(80.9% 0.017 133.8)
-
Step 400
400
#9AA493
oklch(70.6% 0.027 132.2)
-
Step 500
500
#828E79
oklch(63.1% 0.034 131.7)
-
Step 600
600
#6B7862
oklch(55.5% 0.037 132.6)
-
Step 700
700
#596551
oklch(49% 0.034 132.9)
-
Step 800
800
#495342
oklch(42.8% 0.03 132.5)
-
Step 900
900 (this color)
#343B2F
oklch(34.2% 0.023 132.3)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#343B2F 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) | #3C392E | 0.014 |
| Deuteranopia (no green cones) | #3B3930 | 0.014 |
| Tritanopia (no blue cones) | #343A38 | 0.017 |
| Achromatopsia (no color) | #393939 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343B2F
#343B2F
oklch(34.2% 0.023 132.3)
- #3C3541
#3C3541
oklch(34.1% 0.023 311.2)
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 #343B2F, 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 0.037
- Pakistan Green #283618 ΔE 0.043
- Gunmetal #293241 ΔE 0.054
- Dark Olive #373E02 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.057
- Charcoal #264653 ΔE 0.061
- Evergreen #05472A ΔE 0.061
Use #343B2F 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.