#3F5347
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.2% 0.032 158.4), rgb(63, 83, 71).
Aa
White text reads best on this color (8.26:1).
About this color
#3F5347 is a dark, muted green. In OKLCH its lightness is 42%, its chroma 0.032 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.030 away. White text reads best on it, at 8.26:1.
| Hue family | Greens |
| Lightness | dark (42%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.53:1 |
| White text | 8.26:1 |
Values
| HEX | #3F5347 |
| RGB | rgb(63, 83, 71) |
| HSL | hsl(144, 14%, 29%) |
| OKLCH | oklch(42.2% 0.032 158.4) |
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 #3F5347 | 8.26:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #3F5347 | 2.53:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #3F5347 text on white | 8.26:1 | AAA | Lc 88.6 | Fine for body text |
| #3F5347 text on black | 2.53:1 | Fails | Lc -13.6 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D4DBD6
oklch(88.5% 0.01 155.1)
-
Step 300
300
#B7C4BC
oklch(80.8% 0.018 159)
-
Step 400
400
#92A79A
oklch(70.8% 0.03 158.4)
-
Step 500
500
#779181
oklch(63.2% 0.038 158.1)
-
Step 600
600
#5F7B6A
oklch(55.6% 0.042 158.1)
-
Step 700
700
#4E6859
oklch(49.2% 0.039 159.3)
-
Step 800
800 (this color)
#3F5347
oklch(42.2% 0.032 158.4)
-
Step 900
900
#37463D
oklch(37.8% 0.025 158.6)
-
Step 950
950
#202924
oklch(27% 0.016 160.8)
#3F5347 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) | #535046 | 0.030 |
| Deuteranopia (no green cones) | #4F4D48 | 0.030 |
| Tritanopia (no blue cones) | #3C534F | 0.013 |
| Achromatopsia (no color) | #4E4E4E | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F5347
#3F5347
oklch(42.2% 0.032 158.4)
- #594753
#594753
oklch(42.1% 0.031 338.7)
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 #3F5347, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.030
- Dark Blue Green #005249 ΔE 0.052
- Deep Teal #00555A ΔE 0.053
- Dark Green Blue #1F6357 ΔE 0.053
- Pine #2B5D34 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.058
- Dark Teal #014D4E ΔE 0.060
- Charcoal #264653 ΔE 0.063
Use #3F5347 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.