#399B4E
Closest named color: Light Forest Green (#4F9153). oklch(61.3% 0.145 147.7), rgb(57, 155, 78).
Aa
Black text reads best on this color (5.97:1).
About this color
#399B4E is a medium-dark, vivid green. In OKLCH its lightness is 61%, its chroma 0.145 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Forest Green (#4F9153), ΔE 0.036 away. Black text reads best on it, at 5.97:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Light Forest Green (#4F9153) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #399B4E |
| RGB | rgb(57, 155, 78) |
| HSL | hsl(133, 46%, 42%) |
| OKLCH | oklch(61.3% 0.145 147.7) |
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 #399B4E | 3.51:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #399B4E | 5.97:1 | AA | Lc 41.7 | Non-text elements, placeholder text |
| #399B4E text on white | 3.51:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #399B4E text on black | 5.97:1 | AA | Lc -39.3 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE2
oklch(93.6% 0.021 147.6)
-
Step 200
200
#C9E1CB
oklch(88.6% 0.039 147.6)
-
Step 300
300
#A2CEA7
oklch(80.9% 0.071 147.9)
-
Step 400
400
#6DB477
oklch(70.7% 0.114 147.6)
-
Step 500
500 (this color)
#399B4E
oklch(61.3% 0.145 147.7)
-
Step 600
600
#0D8B37
oklch(55.7% 0.158 147.8)
-
Step 700
700
#00752B
oklch(49% 0.143 147.8)
-
Step 800
800
#056023
oklch(42.7% 0.122 147.7)
-
Step 900
900
#144F22
oklch(37.8% 0.095 147.7)
-
Step 950
950
#0E2E14
oklch(26.9% 0.06 147.5)
#399B4E 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) | #9D8E48 | 0.116 |
| Deuteranopia (no green cones) | #908553 | 0.114 |
| Tritanopia (no blue cones) | #1D9889 | 0.084 |
| Achromatopsia (no color) | #898989 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399B4E
#399B4E
oklch(61.3% 0.145 147.7)
- #B161B0
#B161B0
oklch(61.3% 0.145 327.6)
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 #399B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Forest Green #4F9153 ΔE 0.036
- Muted Green #5FA052 ΔE 0.038
- Fern Green #548D44 ΔE 0.042
- Kelley Green #009337 ΔE 0.043
- Mid Green #50A747 ΔE 0.044
- Flat Green #699D4C ΔE 0.044
- Irish Green #019529 ΔE 0.048
- Grass Green #3F9B0B ΔE 0.049
Use #399B4E 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.