#3F3545
Closest named color: Onyx (#343A40). oklch(34.6% 0.03 312.7), rgb(63, 53, 69).
Aa
White text reads best on this color (11.62:1).
About this color
#3F3545 is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.030 and its hue 313°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.027 away. White text reads best on it, at 11.62:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.030) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.80:1 |
| White text | 11.62:1 |
Values
| HEX | #3F3545 |
| RGB | rgb(63, 53, 69) |
| HSL | hsl(278, 13%, 24%) |
| OKLCH | oklch(34.6% 0.03 312.7) |
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 #3F3545 | 11.62:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #3F3545 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #3F3545 text on white | 11.62:1 | AAA | Lc 96.7 | Preferred for body text |
| #3F3545 text on black | 1.80:1 | 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
#F6F5F7
oklch(97.1% 0.003 308.4)
-
Step 100
100
#EBE9ED
oklch(93.7% 0.006 308.4)
-
Step 200
200
#DCD7DF
oklch(88.5% 0.012 313.2)
-
Step 300
300
#C6BDCB
oklch(81% 0.022 313.8)
-
Step 400
400
#A99AB1
oklch(70.7% 0.037 314)
-
Step 500
500
#93829E
oklch(63.1% 0.046 312.1)
-
Step 600
600
#7E6B89
oklch(55.7% 0.051 313)
-
Step 700
700
#6A5974
oklch(49.1% 0.047 312.9)
-
Step 800
800
#56495F
oklch(42.7% 0.039 311.3)
-
Step 900
900 (this color)
#3F3545
oklch(34.6% 0.03 312.7)
-
Step 950
950
#2A242D
oklch(27.1% 0.018 314.5)
#3F3545 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) | #333846 | 0.021 |
| Deuteranopia (no green cones) | #353944 | 0.021 |
| Tritanopia (no blue cones) | #3F373A | 0.023 |
| Achromatopsia (no color) | #393939 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F3545
#3F3545
oklch(34.6% 0.03 312.7)
- #333D2D
#333D2D
oklch(34.6% 0.03 133.9)
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 #3F3545, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.027
- Gunmetal #293241 ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.049
- Prussian Blue #1D3557 ΔE 0.059
- Charcoal #264653 ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.061
Use #3F3545 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.