#434840
Closest named color: Charcoal Grey (#3C4142). oklch(39.4% 0.015 133.5), rgb(67, 72, 64).
Aa
White text reads best on this color (9.37:1).
About this color
#434840 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.028 away. White text reads best on it, at 9.37:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.23:1 |
| White text | 9.37:1 |
Values
| HEX | #434840 |
| RGB | rgb(67, 72, 64) |
| HSL | hsl(97, 6%, 27%) |
| OKLCH | oklch(39.4% 0.015 133.5) |
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 #434840 | 9.37:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #434840 | 2.23:1 | Fails | Lc 12.3 | Not readable |
| #434840 text on white | 9.37:1 | AAA | Lc 91.7 | Preferred for body text |
| #434840 text on black | 2.23:1 | Fails | Lc -10.7 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E9EAE8
oklch(93.6% 0.003 128.5)
-
Step 200
200
#D7DAD6
oklch(88.5% 0.006 137.8)
-
Step 300
300
#BEC2BB
oklch(80.9% 0.011 131.4)
-
Step 400
400
#9CA398
oklch(70.7% 0.018 133.9)
-
Step 500
500
#848D7F
oklch(63.2% 0.023 134.2)
-
Step 600
600
#6E7768
oklch(55.7% 0.025 132.7)
-
Step 700
700
#5C6457
oklch(49.2% 0.023 133.3)
-
Step 800
800
#4B5147
oklch(42.6% 0.018 132.7)
-
Step 900
900 (this color)
#434840
oklch(39.4% 0.015 133.5)
-
Step 950
950
#252723
oklch(26.9% 0.008 128.8)
#434840 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) | #494740 | 0.010 |
| Deuteranopia (no green cones) | #484640 | 0.010 |
| Tritanopia (no blue cones) | #434746 | 0.012 |
| Achromatopsia (no color) | #464646 | 0.015 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #434840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.035
- Charcoal #264653 ΔE 0.051
- Onyx #343A40 ΔE 0.055
- Dark Grey Blue #29465B ΔE 0.058
- Dark Teal #014D4E ΔE 0.061
- Dark Blue Green #005249 ΔE 0.062
- Deep Teal #00555A ΔE 0.067
Use #434840 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.