#378B2E
Closest named color: Forest Green (#228B22). oklch(56.5% 0.153 141.7), rgb(55, 139, 46).
Aa
Black text reads best on this color (4.89:1).
About this color
#378B2E is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.153 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.018 away. Black text reads best on it, at 4.89:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.153) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.89:1 |
| White text | 4.29:1 |
Values
| HEX | #378B2E |
| RGB | rgb(55, 139, 46) |
| HSL | hsl(114, 50%, 36%) |
| OKLCH | oklch(56.5% 0.153 141.7) |
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 #378B2E | 4.29:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #378B2E | 4.89:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #378B2E text on white | 4.29:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #378B2E text on black | 4.89:1 | AA | Lc -32.3 | Non-text elements, placeholder text |
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
#E3EDE1
oklch(93.5% 0.019 140.5)
-
Step 200
200
#CCE0C9
oklch(88.5% 0.038 141.6)
-
Step 300
300
#A8CCA3
oklch(80.8% 0.069 141.7)
-
Step 400
400
#78B271
oklch(70.7% 0.11 141.8)
-
Step 500
500
#539E4A
oklch(63.1% 0.141 141.6)
-
Step 600
600 (this color)
#378B2E
oklch(56.5% 0.153 141.7)
-
Step 700
700
#26731D
oklch(49% 0.141 141.6)
-
Step 800
800
#215E1B
oklch(42.7% 0.117 141.8)
-
Step 900
900
#214D1C
oklch(37.6% 0.092 141.7)
-
Step 950
950
#142D12
oklch(26.9% 0.057 142.3)
#378B2E 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) | #8E7E22 | 0.107 |
| Deuteranopia (no green cones) | #847736 | 0.108 |
| Tritanopia (no blue cones) | #2A8778 | 0.100 |
| Achromatopsia (no color) | #7A7A7A | 0.153 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378B2E
#378B2E
oklch(56.5% 0.153 141.7)
- #9E52AB
#9E52AB
oklch(56.5% 0.154 321.6)
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 #378B2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.018
- Kelley Green #009337 ΔE 0.027
- Emerald Green #028F1E ΔE 0.030
- Sap Green #5C8B15 ΔE 0.035
- Irish Green #019529 ΔE 0.035
- Dark Grass Green #388004 ΔE 0.036
- Fern Green #548D44 ΔE 0.039
- Mossy Green #638B27 ΔE 0.043
Use #378B2E 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.