#399666
Closest named color: Ocean Green (#3D9973). oklch(60.5% 0.115 157.5), rgb(57, 150, 102).
Aa
Black text reads best on this color (5.72:1).
About this color
#399666 is a medium-dark, moderately saturated green. In OKLCH its lightness is 60%, its chroma 0.115 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.019 away. Black text reads best on it, at 5.72:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 5.72:1 |
| White text | 3.66:1 |
Values
| HEX | #399666 |
| RGB | rgb(57, 150, 102) |
| HSL | hsl(149, 45%, 41%) |
| OKLCH | oklch(60.5% 0.115 157.5) |
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 #399666 | 3.66:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #399666 | 5.72:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #399666 text on white | 3.66:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #399666 text on black | 5.72:1 | AA | Lc -37.7 | 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
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E1EDE6
oklch(93.5% 0.016 160.6)
-
Step 200
200
#C9E0D1
oklch(88.5% 0.032 157.1)
-
Step 300
300
#A3CCB3
oklch(80.9% 0.056 158.1)
-
Step 400
400
#6FB28B
oklch(70.8% 0.09 157.6)
-
Step 500
500 (this color)
#399666
oklch(60.5% 0.115 157.5)
-
Step 600
600
#158955
oklch(55.7% 0.126 157.2)
-
Step 700
700
#007446
oklch(49.2% 0.116 157.5)
-
Step 800
800
#0B5E39
oklch(42.6% 0.096 157.3)
-
Step 900
900
#164D31
oklch(37.6% 0.075 157.2)
-
Step 950
950
#0F2D1D
oklch(26.9% 0.047 157.6)
#399666 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) | #958B63 | 0.106 |
| Deuteranopia (no green cones) | #888269 | 0.103 |
| Tritanopia (no blue cones) | #0E9589 | 0.053 |
| Achromatopsia (no color) | #858585 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399666
#399666
oklch(60.5% 0.115 157.5)
- #AD659A
#AD659A
oklch(60.5% 0.115 337.5)
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 #399666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.019
- Viridian #1E9167 ΔE 0.023
- Light Forest Green #4F9153 ΔE 0.026
- Sea Green #2E8B57 ΔE 0.037
- Fern Green #548D44 ΔE 0.042
- Jade #1FA774 ΔE 0.048
- Slate Green #658D6D ΔE 0.051
- Dark Sage #598556 ΔE 0.051
Use #399666 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.