#509E77
Closest named color: Ocean Green (#3D9973). oklch(63.8% 0.098 160), rgb(80, 158, 119).
Aa
Black text reads best on this color (6.49:1).
About this color
#509E77 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.098 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.023 away. Black text reads best on it, at 6.49:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 6.49:1 |
| White text | 3.23:1 |
Values
| HEX | #509E77 |
| RGB | rgb(80, 158, 119) |
| HSL | hsl(150, 33%, 47%) |
| OKLCH | oklch(63.8% 0.098 160) |
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 #509E77 | 3.23:1 | AA large text | Lc -64.8 | Content text, not long reading |
| Black text on #509E77 | 6.49:1 | AA | Lc 44.7 | Non-text elements, placeholder text |
| #509E77 text on white | 3.23:1 | AA large text | Lc 59.4 | Large or bold text, headings |
| #509E77 text on black | 6.49:1 | AA | Lc -42.3 | 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
#F2F7F4
oklch(97.2% 0.007 160.1)
-
Step 100
100
#E2EDE7
oklch(93.6% 0.014 162.5)
-
Step 200
200
#CBDFD3
oklch(88.5% 0.027 159.5)
-
Step 300
300
#A7CBB6
oklch(81% 0.048 159.5)
-
Step 400
400
#75B090
oklch(70.7% 0.078 159.9)
-
Step 500
500 (this color)
#509E77
oklch(63.8% 0.098 160)
-
Step 600
600
#2C865D
oklch(55.6% 0.107 159.8)
-
Step 700
700
#1D724D
oklch(49.2% 0.1 159.9)
-
Step 800
800
#1B5C3F
oklch(42.5% 0.082 160.2)
-
Step 900
900
#1E4C36
oklch(37.7% 0.064 160.2)
-
Step 950
950
#132D20
oklch(27.2% 0.041 160.2)
#509E77 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) | #9C9475 | 0.093 |
| Deuteranopia (no green cones) | #918C79 | 0.090 |
| Tritanopia (no blue cones) | #399D93 | 0.043 |
| Achromatopsia (no color) | #8F8F8F | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #509E77
#509E77
oklch(63.8% 0.098 160)
- #B4749E
#B4749E
oklch(64% 0.097 340.6)
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 #509E77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.023
- Grey Teal #5E9B8A ΔE 0.036
- Jade #1FA774 ΔE 0.038
- Dull Teal #5F9E8F ΔE 0.040
- Persian Green #2A9D8F ΔE 0.041
- Tea #65AB7C ΔE 0.045
- Blue Green #0F9B8E ΔE 0.048
- Sea #3C9992 ΔE 0.048
Use #509E77 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.