#373343
Closest named color: Gunmetal (#293241). oklch(33.2% 0.028 296.3), rgb(55, 51, 67).
Aa
White text reads best on this color (12.23:1).
About this color
#373343 is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.024 away. White text reads best on it, at 12.23:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.71:1 |
| White text | 12.23:1 |
Values
| HEX | #373343 |
| RGB | rgb(55, 51, 67) |
| HSL | hsl(255, 14%, 23%) |
| OKLCH | oklch(33.2% 0.028 296.3) |
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 #373343 | 12.23:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #373343 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #373343 text on white | 12.23:1 | AAA | Lc 97.9 | Preferred for body text |
| #373343 text on black | 1.71:1 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#EAE9EE
oklch(93.6% 0.007 295.4)
-
Step 200
200
#D9D8E0
oklch(88.5% 0.011 291.9)
-
Step 300
300
#C1BECD
oklch(80.9% 0.021 295.1)
-
Step 400
400
#A29DB4
oklch(70.8% 0.034 295.5)
-
Step 500
500
#8B84A1
oklch(63% 0.044 296.2)
-
Step 600
600
#766E8C
oklch(55.6% 0.047 297.1)
-
Step 700
700
#635C77
oklch(49.2% 0.043 296.7)
-
Step 800
800
#514B61
oklch(42.7% 0.037 297.3)
-
Step 900
900 (this color)
#373343
oklch(33.2% 0.028 296.3)
-
Step 950
950
#27252E
oklch(27% 0.017 295.4)
#373343 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) | #303544 | 0.013 |
| Deuteranopia (no green cones) | #303543 | 0.013 |
| Tritanopia (no blue cones) | #353538 | 0.023 |
| Achromatopsia (no color) | #353535 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373343
#373343
oklch(33.2% 0.028 296.3)
- #353827
#353827
oklch(33.2% 0.029 116.1)
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 #373343, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.024
- Onyx #343A40 ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.049
- Midnight Green #073B4C ΔE 0.056
- Charcoal #264653 ΔE 0.061
Use #373343 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.