#378D00
Closest named color: Forest Green (#228B22). oklch(56.8% 0.176 138.2), rgb(55, 141, 0).
Aa
Black text reads best on this color (4.97:1).
About this color
#378D00 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.176 and its hue 138°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.019 away. Black text reads best on it, at 4.97:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.176) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.97:1 |
| White text | 4.22:1 |
Values
| HEX | #378D00 |
| RGB | rgb(55, 141, 0) |
| HSL | hsl(97, 100%, 28%) |
| OKLCH | oklch(56.8% 0.176 138.2) |
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 #378D00 | 4.22:1 | AA large text | Lc -74.2 | Content text, not long reading |
| Black text on #378D00 | 4.97:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #378D00 text on white | 4.22:1 | AA large text | Lc 68.7 | Content text, not long reading |
| #378D00 text on black | 4.97:1 | AA | Lc -33.0 | 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
#F2F7F0
oklch(97% 0.011 136.6)
-
Step 100
100
#E3EEDF
oklch(93.7% 0.023 137.2)
-
Step 200
200
#CBE1C5
oklch(88.6% 0.044 139)
-
Step 300
300
#A8CD9C
oklch(80.9% 0.078 138.1)
-
Step 400
400
#78B363
oklch(70.7% 0.127 137.9)
-
Step 500
500
#529F34
oklch(63% 0.161 138.2)
-
Step 600
600 (this color)
#378D00
oklch(56.8% 0.176 138.2)
-
Step 700
700
#2C7300
oklch(49.1% 0.152 138.1)
-
Step 800
800
#225F00
oklch(42.8% 0.133 138.3)
-
Step 900
900
#214E0D
oklch(37.8% 0.106 138.1)
-
Step 950
950
#142E0A
oklch(27.1% 0.068 138.2)
#378D00 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) | #927F00 | 0.116 |
| Deuteranopia (no green cones) | #87791B | 0.112 |
| Tritanopia (no blue cones) | #2E8877 | 0.122 |
| Achromatopsia (no color) | #7B7B7B | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378D00
#378D00
oklch(56.8% 0.176 138.2)
- #A04DB8
#A04DB8
oklch(56.7% 0.176 318.1)
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 #378D00, closest first.
No curated palette has a color within ΔE 0.04 of #378D00.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.019
- Emerald Green #028F1E ΔE 0.020
- True Green #089404 ΔE 0.025
- Irish Green #019529 ΔE 0.027
- Kelley Green #009337 ΔE 0.031
- Sap Green #5C8B15 ΔE 0.038
- Dark Grass Green #388004 ΔE 0.039
- Grass Green #3F9B0B ΔE 0.043
Use #378D00 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.