#378311
Closest named color: Dark Grass Green (#388004). oklch(54.1% 0.16 138.2), rgb(55, 131, 17).
Aa
White text reads best on this color (4.75:1).
About this color
#378311 is a medium-dark, vivid green. In OKLCH its lightness is 54%, its chroma 0.160 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Grass Green (#388004), ΔE 0.009 away. White text reads best on it, at 4.75:1.
| Hue family | Greens |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Dark Grass Green (#388004) |
| Black text | 4.41:1 |
| White text | 4.75:1 |
Values
| HEX | #378311 |
| RGB | rgb(55, 131, 17) |
| HSL | hsl(100, 77%, 29%) |
| OKLCH | oklch(54.1% 0.16 138.2) |
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 #378311 | 4.75:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #378311 | 4.41:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #378311 text on white | 4.75:1 | AA | Lc 72.6 | Content text, not long reading |
| #378311 text on black | 4.41:1 | AA large text | Lc -29.1 | 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 600.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E3EDE0
oklch(93.5% 0.02 138.4)
-
Step 200
200
#CDE0C7
oklch(88.6% 0.039 138.2)
-
Step 300
300
#AACC9F
oklch(80.8% 0.072 138.1)
-
Step 400
400
#7CB26A
oklch(70.8% 0.116 138.2)
-
Step 500
500
#589E3F
oklch(63.2% 0.148 138.3)
-
Step 600
600 (this color)
#378311
oklch(54.1% 0.16 138.2)
-
Step 700
700
#2D7307
oklch(49.1% 0.149 138.3)
-
Step 800
800
#275E0D
oklch(42.8% 0.124 138.2)
-
Step 900
900
#254D15
oklch(37.7% 0.096 138.1)
-
Step 950
950
#162D0E
oklch(26.9% 0.061 138.3)
#378311 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) | #877700 | 0.103 |
| Deuteranopia (no green cones) | #7E7120 | 0.102 |
| Tritanopia (no blue cones) | #307E6F | 0.111 |
| Achromatopsia (no color) | #737373 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378311
#378311
oklch(54.1% 0.16 138.2)
- #944AAA
#944AAA
oklch(54% 0.161 317.9)
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 #378311, closest first.
No curated palette has a color within ΔE 0.04 of #378311.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grass Green #388004 ΔE 0.009
- Tree Green #2A7E19 ΔE 0.020
- Forest Green #228B22 ΔE 0.024
- Green #008000 ΔE 0.030
- Emerald Green #028F1E ΔE 0.037
- Jungle Green #048243 ΔE 0.044
- Kelley Green #009337 ΔE 0.047
- Sap Green #5C8B15 ΔE 0.047
Use #378311 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.