#409E66
Closest named color: Ocean Green (#3D9973). oklch(62.8% 0.123 154.4), rgb(64, 158, 102).
Aa
Black text reads best on this color (6.30:1).
About this color
#409E66 is a medium-light, moderately saturated green. In OKLCH its lightness is 63%, its chroma 0.123 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.027 away. Black text reads best on it, at 6.30:1.
| Hue family | Greens |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 6.30:1 |
| White text | 3.33:1 |
Values
| HEX | #409E66 |
| RGB | rgb(64, 158, 102) |
| HSL | hsl(144, 42%, 44%) |
| OKLCH | oklch(62.8% 0.123 154.4) |
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 #409E66 | 3.33:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #409E66 | 6.30:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #409E66 text on white | 3.33:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #409E66 text on black | 6.30:1 | AA | Lc -41.2 | 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
#E1EDE5
oklch(93.5% 0.017 156.9)
-
Step 200
200
#C9E0CF
oklch(88.5% 0.034 153.6)
-
Step 300
300
#A3CDAF
oklch(81% 0.061 153.8)
-
Step 400
400
#6EB285
oklch(70.6% 0.096 154.2)
-
Step 500
500 (this color)
#409E66
oklch(62.8% 0.123 154.4)
-
Step 600
600
#12894E
oklch(55.5% 0.133 154.5)
-
Step 700
700
#00743F
oklch(49.1% 0.123 154.3)
-
Step 800
800
#095F34
oklch(42.8% 0.103 154.3)
-
Step 900
900
#154E2D
oklch(37.8% 0.081 153.9)
-
Step 950
950
#0F2E1B
oklch(27.2% 0.051 154.1)
#409E66 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) | #9E9262 | 0.110 |
| Deuteranopia (no green cones) | #91896A | 0.107 |
| Tritanopia (no blue cones) | #209C90 | 0.063 |
| Achromatopsia (no color) | #8D8D8D | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #409E66
#409E66
oklch(62.8% 0.123 154.4)
- #B56AA7
#B56AA7
oklch(62.8% 0.124 334.1)
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 #409E66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.027
- Jade #1FA774 ΔE 0.028
- Muted Green #5FA052 ΔE 0.035
- Light Forest Green #4F9153 ΔE 0.038
- Flat Green #699D4C ΔE 0.043
- Seaweed Green #35AD6B ΔE 0.043
- Algae #54AC68 ΔE 0.046
- Viridian #1E9167 ΔE 0.047
Use #409E66 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.