#378E3C
Closest named color: Kelley Green (#009337). oklch(57.5% 0.145 144.4), rgb(55, 142, 60).
Aa
Black text reads best on this color (5.09:1).
About this color
#378E3C is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.145 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.026 away. Black text reads best on it, at 5.09:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #378E3C |
| RGB | rgb(55, 142, 60) |
| HSL | hsl(123, 44%, 39%) |
| OKLCH | oklch(57.5% 0.145 144.4) |
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 #378E3C | 4.12:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #378E3C | 5.09:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #378E3C text on white | 4.12:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #378E3C text on black | 5.09:1 | AA | Lc -33.7 | 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
#E3EDE2
oklch(93.6% 0.018 142.8)
-
Step 200
200
#CBE0CB
oklch(88.5% 0.036 145.3)
-
Step 300
300
#A7CCA7
oklch(80.8% 0.065 144.9)
-
Step 400
400
#77B277
oklch(70.8% 0.105 144.4)
-
Step 500
500
#519E53
oklch(63.1% 0.133 144.3)
-
Step 600
600 (this color)
#378E3C
oklch(57.5% 0.145 144.4)
-
Step 700
700
#227328
oklch(49% 0.135 144.3)
-
Step 800
800
#1F5E23
oklch(42.7% 0.111 144.3)
-
Step 900
900
#204D22
oklch(37.7% 0.086 144.4)
-
Step 950
950
#142D14
oklch(26.9% 0.055 143.9)
#378E3C 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) | #918234 | 0.108 |
| Deuteranopia (no green cones) | #867A42 | 0.108 |
| Tritanopia (no blue cones) | #268A7C | 0.091 |
| Achromatopsia (no color) | #7D7D7D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #378E3C
#378E3C
oklch(57.5% 0.145 144.4)
- #A257A8
#A257A8
oklch(57.5% 0.145 324.5)
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 #378E3C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.026
- Fern Green #548D44 ΔE 0.029
- Forest Green #228B22 ΔE 0.030
- Sea Green #2E8B57 ΔE 0.036
- Sap Green #5C8B15 ΔE 0.037
- Irish Green #019529 ΔE 0.037
- Light Forest Green #4F9153 ΔE 0.037
- Emerald Green #028F1E ΔE 0.038
Use #378E3C 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.