#363643
Closest named color: Onyx (#343A40). oklch(33.8% 0.023 285.1), rgb(54, 54, 67).
Aa
White text reads best on this color (11.89:1).
About this color
#363643 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.016 away. White text reads best on it, at 11.89:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #363643 |
| RGB | rgb(54, 54, 67) |
| HSL | hsl(240, 11%, 24%) |
| OKLCH | oklch(33.8% 0.023 285.1) |
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 #363643 | 11.89:1 | AAA | Lc -100.9 | Preferred for body text |
| Black text on #363643 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #363643 text on white | 11.89:1 | AAA | Lc 97.3 | Preferred for body text |
| #363643 text on black | 1.76:1 | 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
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8DF
oklch(88.4% 0.01 286.2)
-
Step 300
300
#BFBFCB
oklch(80.8% 0.017 286)
-
Step 400
400
#9E9FB1
oklch(70.8% 0.026 283.2)
-
Step 500
500
#87879E
oklch(63.1% 0.034 285.4)
-
Step 600
600
#717189
oklch(55.7% 0.037 285.1)
-
Step 700
700
#5E5E74
oklch(49% 0.035 285)
-
Step 800
800
#4D4D5F
oklch(42.7% 0.03 285.1)
-
Step 900
900 (this color)
#363643
oklch(33.8% 0.023 285.1)
-
Step 950
950
#26262D
oklch(27.2% 0.013 285.5)
#363643 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) | #333744 | 0.005 |
| Deuteranopia (no green cones) | #333743 | 0.006 |
| Tritanopia (no blue cones) | #33383A | 0.020 |
| Achromatopsia (no color) | #373737 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363643
#363643
oklch(33.8% 0.023 285.1)
- #39382B
#39382B
oklch(33.8% 0.022 103.9)
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 #363643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.016
- Gunmetal #293241 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.035
- Space Cadet #2B2D42 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.050
- Midnight Green #073B4C ΔE 0.052
- Charcoal #264653 ΔE 0.053
Use #363643 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.