#3FC09E
Closest named color: Green Blue (#01C08D). oklch(72.9% 0.123 171.7), rgb(63, 192, 158).
Aa
Black text reads best on this color (9.24:1).
About this color
#3FC09E is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.123 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.033 away. Black text reads best on it, at 9.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Green Blue (#01C08D) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #3FC09E |
| RGB | rgb(63, 192, 158) |
| HSL | hsl(164, 51%, 50%) |
| OKLCH | oklch(72.9% 0.123 171.7) |
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 #3FC09E | 2.27:1 | Fails | Lc -49.3 | Large or bold text, headings |
| Black text on #3FC09E | 9.24:1 | AAA | Lc 59.5 | Large or bold text, headings |
| #3FC09E text on white | 2.27:1 | Fails | Lc 44.4 | Non-text elements, placeholder text |
| #3FC09E text on black | 9.24:1 | AAA | Lc -57.7 | 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
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DCEFE8
oklch(93.6% 0.022 171.8)
-
Step 200
200
#BEE3D6
oklch(88.6% 0.043 172)
-
Step 300
300
#8CD1BB
oklch(80.8% 0.077 172.3)
-
Step 400
400 (this color)
#3FC09E
oklch(72.9% 0.123 171.7)
-
Step 500
500
#00A180
oklch(63.1% 0.123 171.4)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725A
oklch(49.2% 0.096 171.5)
-
Step 800
800
#005D49
oklch(42.6% 0.083 171.6)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E23
oklch(26.8% 0.052 171.9)
#3FC09E 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) | #BAB49C | 0.126 |
| Deuteranopia (no green cones) | #A8A7A0 | 0.120 |
| Tritanopia (no blue cones) | #00C2B6 | 0.034 |
| Achromatopsia (no color) | #ACACAC | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC09E
#3FC09E
oklch(72.9% 0.123 171.7)
- #E286B0
#E286B0
oklch(73% 0.123 351.7)
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 #3FC09E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.033
- Topaz #13BBAF ΔE 0.035
- Greenblue #23C48B ΔE 0.035
- Greeny Blue #42B395 ΔE 0.036
- Medium Aquamarine #66CDAA ΔE 0.050
- Light Sea Green #20B2AA ΔE 0.052
- Dark Seafoam #1FB57A ΔE 0.057
- Dark Mint #48C072 ΔE 0.059
Use #3FC09E 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.