#37342B
Closest named color: Onyx (#343A40). oklch(32.5% 0.016 91.7), rgb(55, 52, 43).
Aa
White text reads best on this color (12.43:1).
About this color
#37342B is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.035 away. White text reads best on it, at 12.43:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.68:1 |
| White text | 12.43:1 |
Values
| HEX | #37342B |
| RGB | rgb(55, 52, 43) |
| HSL | hsl(45, 12%, 19%) |
| OKLCH | oklch(32.5% 0.016 91.7) |
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 #37342B | 12.43:1 | AAA | Lc -101.7 | Preferred for body text |
| Black text on #37342B | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #37342B text on white | 12.43:1 | AAA | Lc 98.3 | Preferred for body text |
| #37342B text on black | 1.68:1 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#EAEAE7
oklch(93.6% 0.004 106.5)
-
Step 200
200
#DAD9D4
oklch(88.5% 0.007 97.4)
-
Step 300
300
#C3C0B8
oklch(80.8% 0.012 89.7)
-
Step 400
400
#A5A093
oklch(70.6% 0.019 89.4)
-
Step 500
500
#8F8979
oklch(63.1% 0.024 89.9)
-
Step 600
600
#797362
oklch(55.6% 0.026 90.9)
-
Step 700
700
#666051
oklch(49% 0.024 88.8)
-
Step 800
800
#534F42
oklch(42.7% 0.021 92.9)
-
Step 900
900 (this color)
#37342B
oklch(32.5% 0.016 91.7)
-
Step 950
950
#282621
oklch(26.9% 0.009 88.8)
#37342B 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) | #36342A | 0.003 |
| Deuteranopia (no green cones) | #37342B | 0.000 |
| Tritanopia (no blue cones) | #393331 | 0.013 |
| Achromatopsia (no color) | #343434 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37342B
#37342B
oklch(32.5% 0.016 91.7)
- #31343D
#31343D
oklch(32.6% 0.016 270.9)
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 #37342B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.035
- Pakistan Green #283618 ΔE 0.044
- Gunmetal #293241 ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.062
- Dark Olive #373E02 ΔE 0.067
- Jet #212529 ΔE 0.068
Use #37342B 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.