#278C35
Closest named color: Forest Green (#228B22). oklch(56.4% 0.155 145.3), rgb(39, 140, 53).
Aa
Black text reads best on this color (4.88:1).
About this color
#278C35 is a medium-dark, vivid green. In OKLCH its lightness is 56%, its chroma 0.155 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Forest Green (#228B22), ΔE 0.017 away. Black text reads best on it, at 4.88:1.
| Hue family | Greens |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Forest Green (#228B22) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #278C35 |
| RGB | rgb(39, 140, 53) |
| HSL | hsl(128, 56%, 35%) |
| OKLCH | oklch(56.4% 0.155 145.3) |
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 #278C35 | 4.29:1 | AA large text | Lc -74.8 | Content text, not long reading |
| Black text on #278C35 | 4.88:1 | AA | Lc 34.8 | Non-text elements, placeholder text |
| #278C35 text on white | 4.29:1 | AA large text | Lc 69.3 | Content text, not long reading |
| #278C35 text on black | 4.88:1 | AA | Lc -32.4 | 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
#CAE0CA
oklch(88.4% 0.038 145.2)
-
Step 300
300
#A5CDA5
oklch(80.9% 0.07 144.9)
-
Step 400
400
#72B375
oklch(70.7% 0.111 145.3)
-
Step 500
500
#499F50
oklch(63% 0.142 145.2)
-
Step 600
600 (this color)
#278C35
oklch(56.4% 0.155 145.3)
-
Step 700
700
#147525
oklch(49.2% 0.144 145.2)
-
Step 800
800
#155F20
oklch(42.7% 0.119 145.3)
-
Step 900
900
#1B4E20
oklch(37.7% 0.093 145.2)
-
Step 950
950
#112E13
oklch(27.1% 0.06 145)
#278C35 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) | #8E7F2C | 0.116 |
| Deuteranopia (no green cones) | #82773C | 0.115 |
| Tritanopia (no blue cones) | #008879 | 0.095 |
| Achromatopsia (no color) | #7A7A7A | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #278C35
#278C35
oklch(56.4% 0.155 145.3)
- #A250A6
#A250A6
oklch(56.4% 0.155 325.6)
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 #278C35, closest first.
No curated palette has a color within ΔE 0.04 of #278C35.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Forest Green #228B22 ΔE 0.017
- Kelley Green #009337 ΔE 0.022
- Emerald Green #028F1E ΔE 0.027
- Irish Green #019529 ΔE 0.033
- Dark Grass Green #388004 ΔE 0.039
- Jungle Green #048243 ΔE 0.041
- Sea Green #2E8B57 ΔE 0.043
- Tree Green #2A7E19 ΔE 0.043
Use #278C35 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.