#43373F
Closest named color: Onyx (#343A40). oklch(35.3% 0.021 338.4), rgb(67, 55, 63).
Aa
White text reads best on this color (11.30:1).
About this color
#43373F is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.026 away. White text reads best on it, at 11.30:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.85:1 |
| White text | 11.30:1 |
Values
| HEX | #43373F |
| RGB | rgb(67, 55, 63) |
| HSL | hsl(320, 10%, 24%) |
| OKLCH | oklch(35.3% 0.021 338.4) |
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 #43373F | 11.30:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #43373F | 1.85:1 | Fails | Lc 7.8 | Not readable |
| #43373F text on white | 11.30:1 | AAA | Lc 96.1 | Preferred for body text |
| #43373F text on black | 1.85:1 | 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#ECE9EB
oklch(93.7% 0.004 337.4)
-
Step 200
200
#DDD7DB
oklch(88.5% 0.008 337.5)
-
Step 300
300
#C8BDC4
oklch(80.9% 0.016 339)
-
Step 400
400
#AC9BA6
oklch(70.8% 0.025 338.8)
-
Step 500
500
#978290
oklch(63% 0.032 338.3)
-
Step 600
600
#826C7A
oklch(55.7% 0.034 339.9)
-
Step 700
700
#6E5A67
oklch(49.2% 0.033 339.3)
-
Step 800
800
#594954
oklch(42.6% 0.028 337.6)
-
Step 900
900 (this color)
#43373F
oklch(35.3% 0.021 338.4)
-
Step 950
950
#2B2429
oklch(27% 0.014 336.2)
#43373F 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) | #37393F | 0.021 |
| Deuteranopia (no green cones) | #3A3B3F | 0.019 |
| Tritanopia (no blue cones) | #44373A | 0.009 |
| Achromatopsia (no color) | #3A3A3A | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43373F
#43373F
oklch(35.3% 0.021 338.4)
- #323F37
#323F37
oklch(35.3% 0.022 158.1)
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 #43373F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.032
- Gunmetal #293241 ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.058
- Charcoal #264653 ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.064
- Purple Brown #673A3F ΔE 0.071
Use #43373F 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.