#319B3F
Closest named color: Grass Green (#3F9B0B). oklch(60.9% 0.162 145.4), rgb(49, 155, 63).
Aa
Black text reads best on this color (5.89:1).
About this color
#319B3F is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.162 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.032 away. Black text reads best on it, at 5.89:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.162) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 5.89:1 |
| White text | 3.56:1 |
Values
| HEX | #319B3F |
| RGB | rgb(49, 155, 63) |
| HSL | hsl(128, 52%, 40%) |
| OKLCH | oklch(60.9% 0.162 145.4) |
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 #319B3F | 3.56:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #319B3F | 5.89:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #319B3F text on white | 3.56:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #319B3F text on black | 5.89:1 | AA | Lc -38.9 | 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 500.
-
Step 50
50
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE1
oklch(93.6% 0.022 145.4)
-
Step 200
200
#C8E1C8
oklch(88.4% 0.043 145.2)
-
Step 300
300
#A1CFA2
oklch(81% 0.079 145.3)
-
Step 400
400
#6AB56E
oklch(70.6% 0.126 145.2)
-
Step 500
500 (this color)
#319B3F
oklch(60.9% 0.162 145.4)
-
Step 600
600
#008C27
oklch(55.7% 0.173 145.4)
-
Step 700
700
#00761F
oklch(49.2% 0.153 145.3)
-
Step 800
800
#006118
oklch(42.8% 0.133 145.4)
-
Step 900
900
#104F19
oklch(37.6% 0.105 145.2)
-
Step 950
950
#0C2F10
oklch(27.1% 0.068 145.4)
#319B3F 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) | #9D8D36 | 0.122 |
| Deuteranopia (no green cones) | #918446 | 0.122 |
| Tritanopia (no blue cones) | #0E9787 | 0.099 |
| Achromatopsia (no color) | #888888 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #319B3F
#319B3F
oklch(60.9% 0.162 145.4)
- #B25BB7
#B25BB7
oklch(60.9% 0.162 325.3)
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 #319B3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.032
- Kelley Green #009337 ΔE 0.032
- Irish Green #019529 ΔE 0.033
- Grassy Green #419C03 ΔE 0.035
- Mid Green #50A747 ΔE 0.045
- True Green #089404 ΔE 0.046
- Emerald Green #028F1E ΔE 0.048
- Muted Green #5FA052 ΔE 0.049
Use #319B3F 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.