#399E3F
Closest named color: Grass Green (#3F9B0B). oklch(61.9% 0.163 144.2), rgb(57, 158, 63).
Aa
Black text reads best on this color (6.13:1).
About this color
#399E3F is a medium-dark, vivid green. In OKLCH its lightness is 62%, its chroma 0.163 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass Green (#3F9B0B), ΔE 0.031 away. Black text reads best on it, at 6.13:1.
| Hue family | Greens |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Grass Green (#3F9B0B) |
| Black text | 6.13:1 |
| White text | 3.42:1 |
Values
| HEX | #399E3F |
| RGB | rgb(57, 158, 63) |
| HSL | hsl(124, 47%, 42%) |
| OKLCH | oklch(61.9% 0.163 144.2) |
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 #399E3F | 3.42:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #399E3F | 6.13:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #399E3F text on white | 3.42:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #399E3F text on black | 6.13:1 | AA | Lc -40.3 | 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
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E1C7
oklch(88.4% 0.044 144.2)
-
Step 300
300
#A2CFA0
oklch(81% 0.081 143.7)
-
Step 400
400
#6CB56C
oklch(70.7% 0.127 144.1)
-
Step 500
500 (this color)
#399E3F
oklch(61.9% 0.163 144.2)
-
Step 600
600
#068C1F
oklch(55.6% 0.177 144.2)
-
Step 700
700
#007617
oklch(49.1% 0.158 144.3)
-
Step 800
800
#026112
oklch(42.8% 0.137 144.2)
-
Step 900
900
#124F17
oklch(37.6% 0.106 144.2)
-
Step 950
950
#0D2F0F
oklch(27.1% 0.068 144.4)
#399E3F 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) | #A19035 | 0.121 |
| Deuteranopia (no green cones) | #948747 | 0.120 |
| Tritanopia (no blue cones) | #229A89 | 0.101 |
| Achromatopsia (no color) | #8B8B8B | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399E3F
#399E3F
oklch(61.9% 0.163 144.2)
- #B55FBC
#B55FBC
oklch(62% 0.162 324.5)
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 #399E3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass Green #3F9B0B ΔE 0.031
- Grassy Green #419C03 ΔE 0.032
- Mid Green #50A747 ΔE 0.034
- Irish Green #019529 ΔE 0.041
- Muted Green #5FA052 ΔE 0.042
- Kelley Green #009337 ΔE 0.043
- Medium Green #39AD48 ΔE 0.043
- Kelly Green #02AB2E ΔE 0.047
Use #399E3F 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.