#3FD9D2
Closest named color: Turquoise (#40E0D0). oklch(80.6% 0.125 190.4), rgb(63, 217, 210).
Aa
Black text reads best on this color (12.06:1).
About this color
#3FD9D2 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.125 and its hue 190°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.021 away. Black text reads best on it, at 12.06:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.06:1 |
| White text | 1.74:1 |
Values
| HEX | #3FD9D2 |
| RGB | rgb(63, 217, 210) |
| HSL | hsl(177, 67%, 55%) |
| OKLCH | oklch(80.6% 0.125 190.4) |
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 #3FD9D2 | 1.74:1 | Fails | Lc -35.1 | Non-text elements, placeholder text |
| Black text on #3FD9D2 | 12.06:1 | AAA | Lc 72.6 | Content text, not long reading |
| #3FD9D2 text on white | 1.74:1 | Fails | Lc 31.2 | Non-text elements, placeholder text |
| #3FD9D2 text on black | 12.06:1 | AAA | Lc -71.5 | Content text, not long reading |
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 300.
-
Step 50
50
#EAF9F8
oklch(97.1% 0.016 192.1)
-
Step 100
100
#D0F2EF
oklch(93.6% 0.036 190.1)
-
Step 200
200
#A3E8E4
oklch(88.4% 0.069 191.4)
-
Step 300
300 (this color)
#3FD9D2
oklch(80.6% 0.125 190.4)
-
Step 400
400
#00B8B2
oklch(70.6% 0.122 190.6)
-
Step 500
500
#009E98
oklch(63.1% 0.109 190)
-
Step 600
600
#008580
oklch(55.7% 0.096 190.1)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005C58
oklch(42.8% 0.074 189.6)
-
Step 900
900
#004C49
oklch(37.6% 0.065 190.2)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#3FD9D2 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) | #CCCED2 | 0.131 |
| Deuteranopia (no green cones) | #B6BDD3 | 0.124 |
| Tritanopia (no blue cones) | #00DFD6 | 0.019 |
| Achromatopsia (no color) | #C4C4C4 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FD9D2
#3FD9D2
oklch(80.6% 0.125 190.4)
- #FFA0AE
#FFA0AE
oklch(80.5% 0.114 10.4)
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 #3FD9D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.021
- Medium Turquoise #48D1CC ΔE 0.021
- Aqua Blue #02D8E9 ΔE 0.035
- Dark Turquoise #00CED1 ΔE 0.037
- Seafoam Blue #78D1B6 ΔE 0.047
- Medium Aquamarine #66CDAA ΔE 0.055
- Pale Teal #82CBB2 ΔE 0.059
- Aqua Marine #2EE8BB ΔE 0.061
Use #3FD9D2 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.