#509666
Closest named color: Ocean Green (#3D9973). oklch(61.4% 0.102 152.5), rgb(80, 150, 102).
Aa
Black text reads best on this color (5.89:1).
About this color
#509666 is a medium-dark, moderately saturated green. In OKLCH its lightness is 61%, its chroma 0.102 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.020 away. Black text reads best on it, at 5.89:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.102) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 5.89:1 |
| White text | 3.56:1 |
Values
| HEX | #509666 |
| RGB | rgb(80, 150, 102) |
| HSL | hsl(139, 30%, 45%) |
| OKLCH | oklch(61.4% 0.102 152.5) |
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 #509666 | 3.56:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #509666 | 5.89:1 | AA | Lc 41.0 | Non-text elements, placeholder text |
| #509666 text on white | 3.56:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #509666 text on black | 5.89:1 | AA | Lc -38.6 | 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
#E3EDE5
oklch(93.6% 0.015 151.8)
-
Step 200
200
#CCDFD0
oklch(88.5% 0.029 151.9)
-
Step 300
300
#A9CAB1
oklch(80.8% 0.05 152.5)
-
Step 400
400
#7AAF89
oklch(70.6% 0.079 152.9)
-
Step 500
500 (this color)
#509666
oklch(61.4% 0.102 152.5)
-
Step 600
600
#378653
oklch(55.7% 0.111 152.6)
-
Step 700
700
#287143
oklch(49.1% 0.103 152.6)
-
Step 800
800
#235C37
oklch(42.6% 0.086 152.5)
-
Step 900
900
#234C30
oklch(37.8% 0.067 152.3)
-
Step 950
950
#152C1C
oklch(26.9% 0.042 152.5)
#509666 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) | #968C63 | 0.089 |
| Deuteranopia (no green cones) | #8C8569 | 0.087 |
| Tritanopia (no blue cones) | #419489 | 0.053 |
| Achromatopsia (no color) | #888888 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509666
#509666
oklch(61.4% 0.102 152.5)
- #A96D9F
#A96D9F
oklch(61.5% 0.102 332.9)
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 #509666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.020
- Light Forest Green #4F9153 ΔE 0.025
- Slate Green #658D6D ΔE 0.038
- Viridian #1E9167 ΔE 0.039
- Drab Green #749551 ΔE 0.042
- Fern Green #548D44 ΔE 0.042
- Moss #769958 ΔE 0.045
- Muted Green #5FA052 ΔE 0.047
Use #509666 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.