#278F34
Closest named color: Kelley Green (#009337). oklch(57.2% 0.159 144.9), rgb(39, 143, 52).
Aa
Black text reads best on this color (5.06:1).
About this color
#278F34 is a medium-dark, vivid green. In OKLCH its lightness is 57%, its chroma 0.159 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.014 away. Black text reads best on it, at 5.06:1.
| Hue family | Greens |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #278F34 |
| RGB | rgb(39, 143, 52) |
| HSL | hsl(128, 57%, 36%) |
| OKLCH | oklch(57.2% 0.159 144.9) |
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 #278F34 | 4.14:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #278F34 | 5.06:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #278F34 text on white | 4.14:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #278F34 text on black | 5.06:1 | AA | Lc -33.6 | 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
#CAE1C9
oklch(88.6% 0.041 144.1)
-
Step 300
300
#A4CDA4
oklch(80.8% 0.072 144.9)
-
Step 400
400
#71B373
oklch(70.6% 0.114 144.9)
-
Step 500
500
#47A04D
oklch(63.1% 0.147 144.8)
-
Step 600
600 (this color)
#278F34
oklch(57.2% 0.159 144.9)
-
Step 700
700
#0F7521
oklch(49.1% 0.148 144.9)
-
Step 800
800
#135F1E
oklch(42.6% 0.122 145)
-
Step 900
900
#194E1E
oklch(37.6% 0.096 145)
-
Step 950
950
#102E12
oklch(27% 0.062 144.9)
#278F34 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) | #91822A | 0.118 |
| Deuteranopia (no green cones) | #85793C | 0.119 |
| Tritanopia (no blue cones) | #008B7C | 0.099 |
| Achromatopsia (no color) | #7C7C7C | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #278F34
#278F34
oklch(57.2% 0.159 144.9)
- #A551AB
#A551AB
oklch(57.2% 0.16 324.8)
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 #278F34, closest first.
No curated palette has a color within ΔE 0.04 of #278F34.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.014
- Forest Green #228B22 ΔE 0.018
- Emerald Green #028F1E ΔE 0.023
- Irish Green #019529 ΔE 0.025
- True Green #089404 ΔE 0.037
- Sap Green #5C8B15 ΔE 0.042
- Fern Green #548D44 ΔE 0.043
- Dark Grass Green #388004 ΔE 0.045
Use #278F34 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.