#399166
Closest named color: Viridian (#1E9167). oklch(59.2% 0.108 159.1), rgb(57, 145, 102).
Aa
Black text reads best on this color (5.41:1).
About this color
#399166 is a medium-dark, moderately saturated green. In OKLCH its lightness is 59%, its chroma 0.108 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.014 away. Black text reads best on it, at 5.41:1.
| Hue family | Greens |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.41:1 |
| White text | 3.87:1 |
Values
| HEX | #399166 |
| RGB | rgb(57, 145, 102) |
| HSL | hsl(151, 44%, 40%) |
| OKLCH | oklch(59.2% 0.108 159.1) |
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 #399166 | 3.87:1 | AA large text | Lc -71.5 | Content text, not long reading |
| Black text on #399166 | 5.41:1 | AA | Lc 38.1 | Non-text elements, placeholder text |
| #399166 text on white | 3.87:1 | AA large text | Lc 66.0 | Content text, not long reading |
| #399166 text on black | 5.41:1 | AA | Lc -35.7 | 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 600.
-
Step 50
50
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE6
oklch(93.6% 0.015 158.2)
-
Step 200
200
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A7CBB5
oklch(81% 0.049 158.3)
-
Step 400
400
#76B08F
oklch(70.8% 0.078 158.7)
-
Step 500
500
#4E9C73
oklch(63.1% 0.1 158.7)
-
Step 600
600 (this color)
#399166
oklch(59.2% 0.108 159.1)
-
Step 700
700
#1D724B
oklch(49.2% 0.101 158.7)
-
Step 800
800
#1C5D3E
oklch(42.8% 0.084 158.7)
-
Step 900
900
#1E4C35
oklch(37.7% 0.065 159.2)
-
Step 950
950
#132D1F
oklch(27.2% 0.042 158.4)
#399166 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) | #908763 | 0.101 |
| Deuteranopia (no green cones) | #837E69 | 0.098 |
| Tritanopia (no blue cones) | #129085 | 0.048 |
| Achromatopsia (no color) | #818181 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #399166
#399166
oklch(59.2% 0.108 159.1)
- #A76393
#A76393
oklch(59.1% 0.108 338.8)
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 #399166, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.014
- Sea Green #2E8B57 ΔE 0.027
- Ocean Green #3D9973 ΔE 0.027
- Light Forest Green #4F9153 ΔE 0.028
- Dark Sage #598556 ΔE 0.040
- Fern Green #548D44 ΔE 0.042
- Slate Green #658D6D ΔE 0.046
- Dusty Teal #4C9085 ΔE 0.052
Use #399166 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.