#37323B
Closest named color: Onyx (#343A40). oklch(32.6% 0.017 310.2), rgb(55, 50, 59).
Aa
White text reads best on this color (12.48:1).
About this color
#37323B is a dark close to neutral grey. In OKLCH its lightness is 33%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.025 away. White text reads best on it, at 12.48:1.
| Hue family | Neutrals |
| Lightness | dark (33%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.68:1 |
| White text | 12.48:1 |
Values
| HEX | #37323B |
| RGB | rgb(55, 50, 59) |
| HSL | hsl(273, 8%, 21%) |
| OKLCH | oklch(32.6% 0.017 310.2) |
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 #37323B | 12.48:1 | AAA | Lc -101.8 | Preferred for body text |
| Black text on #37323B | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #37323B text on white | 12.48:1 | AAA | Lc 98.4 | Preferred for body text |
| #37323B 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EAE9EC
oklch(93.6% 0.004 301.4)
-
Step 200
200
#DAD8DD
oklch(88.5% 0.007 304.2)
-
Step 300
300
#C3BEC7
oklch(80.8% 0.014 310.5)
-
Step 400
400
#A49DAA
oklch(70.6% 0.02 309.7)
-
Step 500
500
#8E8596
oklch(63% 0.027 309.2)
-
Step 600
600
#786F80
oklch(55.6% 0.028 309.1)
-
Step 700
700
#655D6C
oklch(49.1% 0.026 309.3)
-
Step 800
800
#534C58
oklch(42.8% 0.021 311.3)
-
Step 900
900 (this color)
#37323B
oklch(32.6% 0.017 310.2)
-
Step 950
950
#28252A
oklch(27% 0.01 312.1)
#37323B 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) | #31343B | 0.012 |
| Deuteranopia (no green cones) | #32343B | 0.010 |
| Tritanopia (no blue cones) | #373335 | 0.012 |
| Achromatopsia (no color) | #343434 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37323B
#37323B
oklch(32.6% 0.017 310.2)
- #31362D
#31362D
oklch(32.5% 0.017 131.1)
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 #37323B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.025
- Gunmetal #293241 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.059
- Midnight Green #073B4C ΔE 0.060
- Jet #212529 ΔE 0.066
Use #37323B 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.