#337B40
Closest named color: Jungle Green (#048243). oklch(52.2% 0.116 147.4), rgb(51, 123, 64).
Aa
White text reads best on this color (5.18:1).
About this color
#337B40 is a medium-dark, moderately saturated green. In OKLCH its lightness is 52%, its chroma 0.116 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jungle Green (#048243), ΔE 0.026 away. White text reads best on it, at 5.18:1.
| Hue family | Greens |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.116) |
| Temperature | in between |
| Nearest name | Jungle Green (#048243) |
| Black text | 4.04:1 |
| White text | 5.18:1 |
Values
| HEX | #337B40 |
| RGB | rgb(51, 123, 64) |
| HSL | hsl(131, 41%, 34%) |
| OKLCH | oklch(52.2% 0.116 147.4) |
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 #337B40 | 5.18:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #337B40 | 4.04:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #337B40 text on white | 5.18:1 | AA | Lc 75.5 | Fine for body text |
| #337B40 text on black | 4.04:1 | AA large text | Lc -26.3 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E3EDE4
oklch(93.6% 0.016 148.4)
-
Step 200
200
#CCDFCE
oklch(88.5% 0.031 148.4)
-
Step 300
300
#A9CBAC
oklch(80.9% 0.056 147.4)
-
Step 400
400
#7AB080
oklch(70.6% 0.09 147.3)
-
Step 500
500
#569C60
oklch(63.1% 0.114 147.3)
-
Step 600
600
#388646
oklch(55.5% 0.124 147.3)
-
Step 700
700 (this color)
#337B40
oklch(52.2% 0.116 147.4)
-
Step 800
800
#245D2E
oklch(42.8% 0.097 147.2)
-
Step 900
900
#234C29
oklch(37.7% 0.075 147.1)
-
Step 950
950
#152D19
oklch(27.1% 0.048 148)
#337B40 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) | #7C713B | 0.091 |
| Deuteranopia (no green cones) | #736A44 | 0.092 |
| Tritanopia (no blue cones) | #23786D | 0.068 |
| Achromatopsia (no color) | #6D6D6D | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337B40
#337B40
oklch(52.2% 0.116 147.4)
- #8C4F8C
#8C4F8C
oklch(52.2% 0.117 327.1)
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 #337B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jungle Green #048243 ΔE 0.026
- Tree Green #2A7E19 ΔE 0.043
- Sea Green #2E8B57 ΔE 0.049
- Dark Grass Green #388004 ΔE 0.051
- Dark Olive Green #556B2F ΔE 0.053
- Muddy Green #657432 ΔE 0.055
- Military Green #667C3E ΔE 0.056
- Dark Sage #598556 ΔE 0.059
Use #337B40 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.