#378E43
Closest named color: Fern Green (#548D44). oklch(57.6% 0.139 146), rgb(55, 142, 67).
Aa
Black text reads best on this color (5.11:1).
About this color
#378E43 is a medium-dark, moderately saturated green. In OKLCH its lightness is 58%, its chroma 0.139 and its hue 146°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fern Green (#548D44), ΔE 0.026 away. Black text reads best on it, at 5.11:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Fern Green (#548D44) |
| Black text | 5.11:1 |
| White text | 4.10:1 |
Values
| HEX | #378E43 |
| RGB | rgb(55, 142, 67) |
| HSL | hsl(128, 44%, 39%) |
| OKLCH | oklch(57.6% 0.139 146) |
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 #378E43 | 4.10:1 | AA large text | Lc -73.4 | Content text, not long reading |
| Black text on #378E43 | 5.11:1 | AA | Lc 36.2 | Non-text elements, placeholder text |
| #378E43 text on white | 4.10:1 | AA large text | Lc 67.9 | Content text, not long reading |
| #378E43 text on black | 5.11:1 | AA | Lc -33.8 | 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
#F2F7F2
oklch(97.1% 0.008 145.5)
-
Step 100
100
#E3EDE3
oklch(93.6% 0.017 145.4)
-
Step 200
200
#CBE0CC
oklch(88.6% 0.035 146.6)
-
Step 300
300
#A7CCA9
oklch(80.9% 0.063 146.4)
-
Step 400
400
#77B17B
oklch(70.6% 0.099 146.1)
-
Step 500
500
#509E58
oklch(63.2% 0.129 146)
-
Step 600
600 (this color)
#378E43
oklch(57.6% 0.139 146)
-
Step 700
700
#21732F
oklch(49.1% 0.129 146.1)
-
Step 800
800
#1E5E28
oklch(42.7% 0.107 146.2)
-
Step 900
900
#204D25
oklch(37.7% 0.083 145.9)
-
Step 950
950
#142D16
oklch(27% 0.052 145.6)
#378E43 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) | #90823C | 0.107 |
| Deuteranopia (no green cones) | #857A48 | 0.106 |
| Tritanopia (no blue cones) | #238B7D | 0.083 |
| Achromatopsia (no color) | #7D7D7D | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378E43
#378E43
oklch(57.6% 0.139 146)
- #A259A4
#A259A4
oklch(57.6% 0.137 326.2)
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 #378E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fern Green #548D44 ΔE 0.026
- Sea Green #2E8B57 ΔE 0.029
- Kelley Green #009337 ΔE 0.031
- Light Forest Green #4F9153 ΔE 0.032
- Forest Green #228B22 ΔE 0.036
- Sap Green #5C8B15 ΔE 0.041
- Mossy Green #638B27 ΔE 0.042
- Moss Green #658B38 ΔE 0.043
Use #378E43 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.