#334343
Closest named color: Charcoal Grey (#3C4142). oklch(36.9% 0.021 196.3), rgb(51, 67, 67).
Aa
White text reads best on this color (10.37:1).
About this color
#334343 is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.014 away. White text reads best on it, at 10.37:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.02:1 |
| White text | 10.37:1 |
Values
| HEX | #334343 |
| RGB | rgb(51, 67, 67) |
| HSL | hsl(180, 14%, 23%) |
| OKLCH | oklch(36.9% 0.021 196.3) |
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 #334343 | 10.37:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #334343 | 2.02:1 | Fails | Lc 9.8 | Not readable |
| #334343 text on white | 10.37:1 | AAA | Lc 94.1 | Preferred for body text |
| #334343 text on black | 2.02:1 | Fails | Lc -8.5 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDB
oklch(88.5% 0.009 197)
-
Step 300
300
#B6C4C4
oklch(81% 0.015 196.9)
-
Step 400
400
#90A6A6
oklch(70.8% 0.025 196.6)
-
Step 500
500
#749090
oklch(63.2% 0.032 196.4)
-
Step 600
600
#5C7A7A
oklch(55.6% 0.034 196.2)
-
Step 700
700
#4C6767
oklch(49.2% 0.032 196.2)
-
Step 800
800
#3E5454
oklch(42.8% 0.027 196.2)
-
Step 900
900 (this color)
#334343
oklch(36.9% 0.021 196.3)
-
Step 950
950
#1F2828
oklch(26.8% 0.013 196.4)
#334343 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) | #414143 | 0.022 |
| Deuteranopia (no green cones) | #3E3F43 | 0.020 |
| Tritanopia (no blue cones) | #2E4443 | 0.007 |
| Achromatopsia (no color) | #404040 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334343
#334343
oklch(36.9% 0.021 196.3)
- #4A3B3C
#4A3B3C
oklch(36.9% 0.021 13.6)
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 #334343, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.014
- Charcoal #264653 ΔE 0.029
- Onyx #343A40 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Dark Teal #014D4E ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.046
- Dark Blue Green #005249 ΔE 0.056
Use #334343 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.