#3FB570
Closest named color: Medium Sea Green (#3CB371). oklch(69% 0.146 153.9), rgb(63, 181, 112).
Aa
Black text reads best on this color (8.05:1).
About this color
#3FB570 is a medium-light, vivid green. In OKLCH its lightness is 69%, its chroma 0.146 and its hue 154°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Sea Green (#3CB371), ΔE 0.007 away. Black text reads best on it, at 8.05:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Medium Sea Green (#3CB371) |
| Black text | 8.05:1 |
| White text | 2.60:1 |
Values
| HEX | #3FB570 |
| RGB | rgb(63, 181, 112) |
| HSL | hsl(145, 48%, 48%) |
| OKLCH | oklch(69% 0.146 153.9) |
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 #3FB570 | 2.60:1 | Fails | Lc -55.7 | Large or bold text, headings |
| Black text on #3FB570 | 8.05:1 | AAA | Lc 53.5 | Large or bold text, headings |
| #3FB570 text on white | 2.60:1 | Fails | Lc 50.5 | Large or bold text, headings |
| #3FB570 text on black | 8.05:1 | AAA | Lc -51.4 | 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 400.
-
Step 50
50
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DDEFE2
oklch(93.5% 0.026 154.5)
-
Step 200
200
#C0E4CA
oklch(88.6% 0.052 153.9)
-
Step 300
300
#91D2A6
oklch(80.8% 0.091 154.3)
-
Step 400
400 (this color)
#3FB570
oklch(69% 0.146 153.9)
-
Step 500
500
#00A45A
oklch(63.1% 0.159 153.9)
-
Step 600
600
#008A4B
oklch(55.6% 0.14 154)
-
Step 700
700
#00743E
oklch(49% 0.124 153.9)
-
Step 800
800
#005F32
oklch(42.6% 0.107 154.1)
-
Step 900
900
#005029
oklch(37.8% 0.096 153.9)
-
Step 950
950
#003016
oklch(27.1% 0.069 153.7)
#3FB570 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) | #B5A76B | 0.129 |
| Deuteranopia (no green cones) | #A69C74 | 0.126 |
| Tritanopia (no blue cones) | #00B3A4 | 0.074 |
| Achromatopsia (no color) | #A0A0A0 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB570
#3FB570
oklch(69% 0.146 153.9)
- #D176C1
#D176C1
oklch(69.1% 0.147 333.9)
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 #3FB570, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Sea Green #3CB371 ΔE 0.007
- Dark Seafoam #1FB57A ΔE 0.017
- Green Teal #0CB577 ΔE 0.018
- Cool Green #33B864 ΔE 0.021
- Bluey Green #2BB179 ΔE 0.021
- Dark Seafoam Green #3EAF76 ΔE 0.022
- Jade Green #2BAF6A ΔE 0.022
- Seaweed Green #35AD6B ΔE 0.025
Use #3FB570 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.