#278D3D
Closest named color: Kelley Green (#009337). oklch(56.8% 0.149 146.9), rgb(39, 141, 61).
Aa
Black text reads best on this color (4.96:1).
About this color
#278D3D is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.149 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.023 away. Black text reads best on it, at 4.96:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 4.96:1 |
| White text | 4.23:1 |
Values
| HEX | #278D3D |
| RGB | rgb(39, 141, 61) |
| HSL | hsl(133, 57%, 35%) |
| OKLCH | oklch(56.8% 0.149 146.9) |
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 #278D3D | 4.23:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #278D3D | 4.96:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #278D3D text on white | 4.23:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #278D3D text on black | 4.96:1 | AA | Lc -32.9 | 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
#E2EEE2
oklch(93.7% 0.02 145.4)
-
Step 200
200
#CAE0CB
oklch(88.5% 0.037 146.5)
-
Step 300
300
#A5CDA8
oklch(80.9% 0.067 146.9)
-
Step 400
400
#72B379
oklch(70.8% 0.107 146.9)
-
Step 500
500
#489F55
oklch(63.1% 0.137 146.8)
-
Step 600
600 (this color)
#278D3D
oklch(56.8% 0.149 146.9)
-
Step 700
700
#11742C
oklch(49% 0.138 147.1)
-
Step 800
800
#145F25
oklch(42.7% 0.115 146.9)
-
Step 900
900
#1A4E23
oklch(37.7% 0.09 146.8)
-
Step 950
950
#112E15
oklch(27.1% 0.057 146.6)
#278D3D 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) | #8F8035 | 0.116 |
| Deuteranopia (no green cones) | #837843 | 0.115 |
| Tritanopia (no blue cones) | #008A7B | 0.087 |
| Achromatopsia (no color) | #7B7B7B | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #278D3D
#278D3D
oklch(56.8% 0.149 146.9)
- #A352A4
#A352A4
oklch(56.7% 0.15 326.9)
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 #278D3D, closest first.
No curated palette has a color within ΔE 0.04 of #278D3D.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.023
- Forest Green #228B22 ΔE 0.025
- Emerald Green #028F1E ΔE 0.033
- Sea Green #2E8B57 ΔE 0.036
- Irish Green #019529 ΔE 0.036
- Fern Green #548D44 ΔE 0.038
- Jungle Green #048243 ΔE 0.040
- Light Forest Green #4F9153 ΔE 0.045
Use #278D3D 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.