#3F644B
Closest named color: Dark Green Blue (#1F6357). oklch(46.8% 0.059 154), rgb(63, 100, 75).
Aa
White text reads best on this color (6.69:1).
About this color
#3F644B is a medium-dark, muted green. In OKLCH its lightness is 47%, its chroma 0.059 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.033 away. White text reads best on it, at 6.69:1.
| Hue family | Greens |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.059) |
| Temperature | in between |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.13:1 |
| White text | 6.69:1 |
Values
| HEX | #3F644B |
| RGB | rgb(63, 100, 75) |
| HSL | hsl(139, 23%, 32%) |
| OKLCH | oklch(46.8% 0.059 154) |
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 #3F644B | 6.69:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #3F644B | 3.13:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #3F644B text on white | 6.69:1 | AA | Lc 83.0 | Fine for body text |
| #3F644B text on black | 3.13:1 | AA large text | Lc -18.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D2DCD4
oklch(88.5% 0.015 151.7)
-
Step 300
300
#B3C6B8
oklch(80.8% 0.028 153.8)
-
Step 400
400
#8BA994
oklch(70.6% 0.045 154.6)
-
Step 500
500
#6E947A
oklch(63.1% 0.057 154.6)
-
Step 600
600
#557E62
oklch(55.4% 0.063 154.1)
-
Step 700
700 (this color)
#3F644B
oklch(46.8% 0.059 154)
-
Step 800
800
#395743
oklch(42.7% 0.049 154.6)
-
Step 900
900
#324838
oklch(37.8% 0.039 152.8)
-
Step 950
950
#1D2A21
oklch(27% 0.024 154.3)
#3F644B 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) | #645E4A | 0.053 |
| Deuteranopia (no green cones) | #5E5A4C | 0.051 |
| Tritanopia (no blue cones) | #38635D | 0.030 |
| Achromatopsia (no color) | #5C5C5C | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F644B
#3F644B
oklch(46.8% 0.059 154)
- #6F4E68
#6F4E68
oklch(46.9% 0.059 334.3)
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 #3F644B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.033
- Pine #2B5D34 ΔE 0.045
- Camo Green #526525 ΔE 0.052
- Dark Olive Green #556B2F ΔE 0.054
- Dark Aqua #05696B ΔE 0.054
- Spruce #0A5F38 ΔE 0.056
- Army Green #4B5D16 ΔE 0.059
- Dark Moss Green #606C38 ΔE 0.059
Use #3F644B 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.