#309D71
Closest named color: Ocean Green (#3D9973). oklch(62.3% 0.119 162.2), rgb(48, 157, 113).
Aa
Black text reads best on this color (6.18:1).
About this color
#309D71 is a medium-light, moderately saturated green. In OKLCH its lightness is 62%, its chroma 0.119 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Ocean Green (#3D9973), ΔE 0.015 away. Black text reads best on it, at 6.18:1.
| Hue family | Greens |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Ocean Green (#3D9973) |
| Black text | 6.18:1 |
| White text | 3.39:1 |
Values
| HEX | #309D71 |
| RGB | rgb(48, 157, 113) |
| HSL | hsl(156, 53%, 40%) |
| OKLCH | oklch(62.3% 0.119 162.2) |
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 #309D71 | 3.39:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #309D71 | 6.18:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #309D71 text on white | 3.39:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #309D71 text on black | 6.18:1 | AA | Lc -40.6 | 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
#F1F7F4
oklch(97.1% 0.007 164.9)
-
Step 100
100
#E1EEE6
oklch(93.7% 0.017 159.1)
-
Step 200
200
#C7E0D3
oklch(88.5% 0.032 163.2)
-
Step 300
300
#9FCDB5
oklch(80.9% 0.059 162)
-
Step 400
400
#67B38F
oklch(70.7% 0.093 162.2)
-
Step 500
500 (this color)
#309D71
oklch(62.3% 0.119 162.2)
-
Step 600
600
#00895D
oklch(55.7% 0.122 162)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
Step 800
800
#005E3F
oklch(42.6% 0.093 162.3)
-
Step 900
900
#0A4E35
oklch(37.7% 0.077 162.4)
-
Step 950
950
#0A2E1F
oklch(27.1% 0.05 162.1)
#309D71 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) | #9B916E | 0.115 |
| Deuteranopia (no green cones) | #8C8774 | 0.111 |
| Tritanopia (no blue cones) | #009D91 | 0.047 |
| Achromatopsia (no color) | #8B8B8B | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #309D71
#309D71
oklch(62.3% 0.119 162.2)
- #B7689B
#B7689B
oklch(62.2% 0.119 341.9)
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 #309D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Green #3D9973 ΔE 0.015
- Jade #1FA774 ΔE 0.029
- Viridian #1E9167 ΔE 0.039
- Light Forest Green #4F9153 ΔE 0.044
- Persian Green #2A9D8F ΔE 0.044
- Blue Green #0F9B8E ΔE 0.045
- Seaweed Green #35AD6B ΔE 0.052
- Muted Green #5FA052 ΔE 0.052
Use #309D71 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.