#343F44
Closest named color: Charcoal Grey (#3C4142). oklch(36% 0.017 227.1), rgb(52, 63, 68).
Aa
White text reads best on this color (10.82:1).
About this color
#343F44 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.015 away. White text reads best on it, at 10.82:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.94:1 |
| White text | 10.82:1 |
Values
| HEX | #343F44 |
| RGB | rgb(52, 63, 68) |
| HSL | hsl(199, 13%, 24%) |
| OKLCH | oklch(36% 0.017 227.1) |
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 #343F44 | 10.82:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #343F44 | 1.94:1 | Fails | Lc 8.8 | Not readable |
| #343F44 text on white | 10.82:1 | AAA | Lc 95.1 | Preferred for body text |
| #343F44 text on black | 1.94:1 | Fails | Lc -7.5 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADD
oklch(88.5% 0.008 228.9)
-
Step 300
300
#B9C2C7
oklch(80.9% 0.012 231.7)
-
Step 400
400
#94A3AB
oklch(70.6% 0.021 230.8)
-
Step 500
500
#7A8D96
oklch(63.1% 0.026 228)
-
Step 600
600
#627780
oklch(55.6% 0.028 225.7)
-
Step 700
700
#51646C
oklch(49% 0.026 225.3)
-
Step 800
800
#435258
oklch(42.8% 0.021 224)
-
Step 900
900 (this color)
#343F44
oklch(36% 0.017 227.1)
-
Step 950
950
#21282B
oklch(27.1% 0.011 225.5)
#343F44 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) | #3C3E44 | 0.013 |
| Deuteranopia (no green cones) | #3A3C44 | 0.013 |
| Tritanopia (no blue cones) | #2F4141 | 0.012 |
| Achromatopsia (no color) | #3D3D3D | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #343F44
#343F44
oklch(36% 0.017 227.1)
- #453B36
#453B36
oklch(36.1% 0.016 48.2)
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 #343F44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.015
- Onyx #343A40 ΔE 0.016
- Charcoal #264653 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.040
- Gunmetal #293241 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.050
- Midnight Green #073B4C ΔE 0.052
Use #343F44 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.