#3FA973
Closest named color: Dark Seafoam Green (#3EAF76). oklch(65.9% 0.127 157.6), rgb(63, 169, 115).
Aa
Black text reads best on this color (7.13:1).
About this color
#3FA973 is a medium-light, moderately saturated green. In OKLCH its lightness is 66%, its chroma 0.127 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.017 away. Black text reads best on it, at 7.13:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.13:1 |
| White text | 2.94:1 |
Values
| HEX | #3FA973 |
| RGB | rgb(63, 169, 115) |
| HSL | hsl(149, 46%, 45%) |
| OKLCH | oklch(65.9% 0.127 157.6) |
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 #3FA973 | 2.94:1 | Fails | Lc -60.9 | Content text, not long reading |
| Black text on #3FA973 | 7.13:1 | AAA | Lc 48.4 | Large or bold text, headings |
| #3FA973 text on white | 2.94:1 | Fails | Lc 55.6 | Large or bold text, headings |
| #3FA973 text on black | 7.13:1 | AAA | Lc -46.2 | Large or bold text, headings |
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
#E1EEE5
oklch(93.7% 0.018 155.8)
-
Step 200
200
#C7E0D0
oklch(88.4% 0.034 157.6)
-
Step 300
300
#A0CDB1
oklch(80.8% 0.062 157.4)
-
Step 400
400
#68B388
oklch(70.6% 0.099 157.5)
-
Step 500
500 (this color)
#3FA973
oklch(65.9% 0.127 157.6)
-
Step 600
600
#008954
oklch(55.5% 0.13 157.7)
-
Step 700
700
#007446
oklch(49.2% 0.116 157.5)
-
Step 800
800
#005F39
oklch(42.8% 0.1 157.9)
-
Step 900
900
#0B4E30
oklch(37.6% 0.082 158)
-
Step 950
950
#0B2E1C
oklch(27% 0.053 157.3)
#3FA973 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) | #A89C70 | 0.118 |
| Deuteranopia (no green cones) | #999276 | 0.114 |
| Tritanopia (no blue cones) | #04A89B | 0.059 |
| Achromatopsia (no color) | #969696 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA973
#3FA973
oklch(65.9% 0.127 157.6)
- #C372AD
#C372AD
oklch(66% 0.126 337.8)
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 #3FA973, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.017
- Jade #1FA774 ΔE 0.017
- Seaweed Green #35AD6B ΔE 0.019
- Bluey Green #2BB179 ΔE 0.022
- Algae #54AC68 ΔE 0.024
- Jade Green #2BAF6A ΔE 0.026
- Medium Sea Green #3CB371 ΔE 0.031
- Dark Seafoam #1FB57A ΔE 0.034
Use #3FA973 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.