#399F66
Closest named color: Jade (#1FA774). oklch(62.9% 0.128 155.3), rgb(57, 159, 102).
Aa
Black text reads best on this color (6.32:1).
About this color
#399F66 is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.128 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Jade (#1FA774), ΔE 0.025 away. Black text reads best on it, at 6.32:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Jade (#1FA774) |
| Black text | 6.32:1 |
| White text | 3.32:1 |
Values
| HEX | #399F66 |
| RGB | rgb(57, 159, 102) |
| HSL | hsl(146, 47%, 42%) |
| OKLCH | oklch(62.9% 0.128 155.3) |
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 #399F66 | 3.32:1 | AA large text | Lc -65.7 | Content text, not long reading |
| Black text on #399F66 | 6.32:1 | AA | Lc 43.8 | Non-text elements, placeholder text |
| #399F66 text on white | 3.32:1 | AA large text | Lc 60.3 | Content text, not long reading |
| #399F66 text on black | 6.32:1 | AA | Lc -41.4 | 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 500.
-
Step 50
50
#F1F7F3
oklch(97.1% 0.008 157.1)
-
Step 100
100
#E1EEE5
oklch(93.7% 0.018 155.8)
-
Step 200
200
#C8E0CF
oklch(88.4% 0.034 154.8)
-
Step 300
300
#A1CDAF
oklch(80.9% 0.063 155)
-
Step 400
400
#6AB385
oklch(70.6% 0.1 155.2)
-
Step 500
500 (this color)
#399F66
oklch(62.9% 0.128 155.3)
-
Step 600
600
#008A4E
oklch(55.6% 0.137 155)
-
Step 700
700
#007441
oklch(49.1% 0.121 155.2)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#104E2D
oklch(37.6% 0.084 155)
-
Step 950
950
#0C2E1B
oklch(27% 0.053 155.6)
#399F66 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) | #9E9362 | 0.113 |
| Deuteranopia (no green cones) | #91896A | 0.112 |
| Tritanopia (no blue cones) | #039D90 | 0.063 |
| Achromatopsia (no color) | #8D8D8D | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399F66
#399F66
oklch(62.9% 0.128 155.3)
- #B769A7
#B769A7
oklch(62.8% 0.127 335)
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 #399F66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jade #1FA774 ΔE 0.025
- Ocean Green #3D9973 ΔE 0.030
- Muted Green #5FA052 ΔE 0.036
- Seaweed Green #35AD6B ΔE 0.040
- Light Forest Green #4F9153 ΔE 0.041
- Flat Green #699D4C ΔE 0.045
- Jade Green #2BAF6A ΔE 0.046
- Algae #54AC68 ΔE 0.046
Use #399F66 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.