#3F5342
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42% 0.037 149), rgb(63, 83, 66).
Aa
White text reads best on this color (8.30:1).
About this color
#3F5342 is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.037 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.034 away. White text reads best on it, at 8.30:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.52:1 |
| White text | 8.30:1 |
Values
| HEX | #3F5342 |
| RGB | rgb(63, 83, 66) |
| HSL | hsl(129, 14%, 29%) |
| OKLCH | oklch(42% 0.037 149) |
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 #3F5342 | 8.30:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #3F5342 | 2.52:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #3F5342 text on white | 8.30:1 | AAA | Lc 88.7 | Fine for body text |
| #3F5342 text on black | 2.52:1 | Fails | Lc -13.5 | 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 800.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE7
oklch(93.6% 0.007 145.5)
-
Step 200
200
#D4DBD5
oklch(88.4% 0.011 149.8)
-
Step 300
300
#B7C5B9
oklch(80.9% 0.023 149.6)
-
Step 400
400
#92A795
oklch(70.7% 0.035 149.4)
-
Step 500
500
#77917B
oklch(63% 0.044 149.4)
-
Step 600
600
#607C64
oklch(55.7% 0.049 148.8)
-
Step 700
700
#4F6853
oklch(49.1% 0.045 149.3)
-
Step 800
800 (this color)
#3F5342
oklch(42% 0.037 149)
-
Step 900
900
#374639
oklch(37.7% 0.029 148.7)
-
Step 950
950
#202922
oklch(27% 0.018 151.7)
#3F5342 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) | #534F41 | 0.031 |
| Deuteranopia (no green cones) | #504D43 | 0.031 |
| Tritanopia (no blue cones) | #3D524E | 0.021 |
| Achromatopsia (no color) | #4E4E4E | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5342
#3F5342
oklch(42% 0.037 149)
- #594657
#594657
oklch(42% 0.037 329.7)
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 #3F5342, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.034
- Pine #2B5D34 ΔE 0.050
- Dark Blue Green #005249 ΔE 0.051
- Dark Green Blue #1F6357 ΔE 0.054
- Deep Teal #00555A ΔE 0.057
- Charcoal Grey #3C4142 ΔE 0.060
- Dark Teal #014D4E ΔE 0.062
- Spruce #0A5F38 ΔE 0.063
Use #3F5342 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.