#3D731B
Closest named color: Tree Green (#2A7E19). oklch(49.9% 0.132 136), rgb(61, 115, 27).
Aa
White text reads best on this color (5.72:1).
About this color
#3D731B is a medium-dark, moderately saturated green. In OKLCH its lightness is 50%, its chroma 0.132 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tree Green (#2A7E19), ΔE 0.035 away. White text reads best on it, at 5.72:1.
| Hue family | Greens |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.132) |
| Temperature | in between |
| Nearest name | Tree Green (#2A7E19) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #3D731B |
| RGB | rgb(61, 115, 27) |
| HSL | hsl(97, 62%, 28%) |
| OKLCH | oklch(49.9% 0.132 136) |
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 #3D731B | 5.72:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #3D731B | 3.66:1 | AA large text | Lc 25.7 | Dividers and decoration only |
| #3D731B text on white | 5.72:1 | AA | Lc 78.4 | Fine for body text |
| #3D731B text on black | 3.66:1 | AA large text | Lc -23.4 | 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
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE1
oklch(93.6% 0.019 137.8)
-
Step 200
200
#CFDFC8
oklch(88.5% 0.035 136)
-
Step 300
300
#AECBA2
oklch(81% 0.064 136.6)
-
Step 400
400
#83AF6F
oklch(70.6% 0.101 136.3)
-
Step 500
500
#649B47
oklch(63.2% 0.13 136)
-
Step 600
600
#4A8526
oklch(55.6% 0.141 136)
-
Step 700
700 (this color)
#3D731B
oklch(49.9% 0.132 136)
-
Step 800
800
#315C17
oklch(42.8% 0.109 136)
-
Step 900
900
#2B4B1A
oklch(37.6% 0.085 136.2)
-
Step 950
950
#1A2C10
oklch(26.9% 0.054 135.5)
#3D731B 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) | #77690A | 0.080 |
| Deuteranopia (no green cones) | #706524 | 0.081 |
| Tritanopia (no blue cones) | #3B6F62 | 0.093 |
| Achromatopsia (no color) | #666666 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D731B
#3D731B
oklch(49.9% 0.132 136)
- #804895
#804895
oklch(50% 0.132 316.1)
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 #3D731B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tree Green #2A7E19 ΔE 0.035
- Dark Grass Green #388004 ΔE 0.043
- Dark Olive Green #556B2F ΔE 0.046
- Jungle Green #048243 ΔE 0.051
- Camo Green #526525 ΔE 0.051
- Green #008000 ΔE 0.052
- Mud Green #606602 ΔE 0.053
- Camouflage Green #4B6113 ΔE 0.054
Use #3D731B 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.