#3FBF81
Closest named color: Greenblue (#23C48B). oklch(71.9% 0.144 158.1), rgb(63, 191, 129).
Aa
Black text reads best on this color (8.98:1).
About this color
#3FBF81 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.144 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Greenblue (#23C48B), ΔE 0.017 away. Black text reads best on it, at 8.98:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.144) |
| Temperature | in between |
| Nearest name | Greenblue (#23C48B) |
| Black text | 8.98:1 |
| White text | 2.33:1 |
Values
| HEX | #3FBF81 |
| RGB | rgb(63, 191, 129) |
| HSL | hsl(151, 50%, 50%) |
| OKLCH | oklch(71.9% 0.144 158.1) |
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 #3FBF81 | 2.33:1 | Fails | Lc -50.6 | Large or bold text, headings |
| Black text on #3FBF81 | 8.98:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #3FBF81 text on white | 2.33:1 | Fails | Lc 45.7 | Large or bold text, headings |
| #3FBF81 text on black | 8.98:1 | AAA | Lc -56.3 | 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
#EFF8F2
oklch(97.1% 0.012 157)
-
Step 100
100
#DCF0E3
oklch(93.7% 0.027 157.4)
-
Step 200
200
#BEE4CD
oklch(88.5% 0.051 158.6)
-
Step 300
300
#8ED3AB
oklch(81% 0.09 158.2)
-
Step 400
400 (this color)
#3FBF81
oklch(71.9% 0.144 158.1)
-
Step 500
500
#00A366
oklch(63% 0.147 158.1)
-
Step 600
600
#008955
oklch(55.5% 0.129 158.2)
-
Step 700
700
#007447
oklch(49.2% 0.115 158)
-
Step 800
800
#005F39
oklch(42.8% 0.1 157.9)
-
Step 900
900
#004F2F
oklch(37.7% 0.088 158.2)
-
Step 950
950
#002F1A
oklch(26.9% 0.063 158.2)
#3FBF81 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) | #BDB17D | 0.133 |
| Deuteranopia (no green cones) | #ADA585 | 0.130 |
| Tritanopia (no blue cones) | #00BEAF | 0.065 |
| Achromatopsia (no color) | #A9A9A9 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FBF81
#3FBF81
oklch(71.9% 0.144 158.1)
- #DD7EC3
#DD7EC3
oklch(71.8% 0.144 338.1)
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 #3FBF81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greenblue #23C48B ΔE 0.017
- Dark Mint #48C072 ΔE 0.020
- Green Blue #01C08D ΔE 0.020
- Dark Mint Green #20C073 ΔE 0.025
- Algae Green #21C36F ΔE 0.033
- Dark Seafoam #1FB57A ΔE 0.034
- Medium Sea Green #3CB371 ΔE 0.036
- Green Teal #0CB577 ΔE 0.038
Use #3FBF81 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.