#3FC6B2
Closest named color: Medium Aquamarine (#66CDAA). oklch(75% 0.118 181), rgb(63, 198, 178).
Aa
Black text reads best on this color (9.93:1).
About this color
#3FC6B2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 75%, its chroma 0.118 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.037 away. Black text reads best on it, at 9.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.118) |
| Temperature | cool |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 9.93:1 |
| White text | 2.11:1 |
Values
| HEX | #3FC6B2 |
| RGB | rgb(63, 198, 178) |
| HSL | hsl(171, 54%, 51%) |
| OKLCH | oklch(75% 0.118 181) |
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 #3FC6B2 | 2.11:1 | Fails | Lc -45.7 | Large or bold text, headings |
| Black text on #3FC6B2 | 9.93:1 | AAA | Lc 62.9 | Content text, not long reading |
| #3FC6B2 text on white | 2.11:1 | Fails | Lc 41.1 | Non-text elements, placeholder text |
| #3FC6B2 text on black | 9.93:1 | AAA | Lc -61.2 | 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 400.
-
Step 50
50
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DBEFEA
oklch(93.6% 0.022 179.2)
-
Step 200
200
#BDE3DA
oklch(88.6% 0.042 179.3)
-
Step 300
300
#8AD1C3
oklch(81% 0.074 180.6)
-
Step 400
400 (this color)
#3FC6B2
oklch(75% 0.118 181)
-
Step 500
500
#009F8D
oklch(63% 0.114 181)
-
Step 600
600
#008677
oklch(55.6% 0.1 181.4)
-
Step 700
700
#007164
oklch(49.2% 0.089 181.2)
-
Step 800
800
#005C51
oklch(42.6% 0.077 181.1)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#3FC6B2 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) | #BDBAB1 | 0.125 |
| Deuteranopia (no green cones) | #AAACB4 | 0.120 |
| Tritanopia (no blue cones) | #00CAC0 | 0.022 |
| Achromatopsia (no color) | #B2B2B2 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC6B2
#3FC6B2
oklch(75% 0.118 181)
- #EB8DA9
#EB8DA9
oklch(74.9% 0.118 1.1)
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 #3FC6B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.037
- Topaz #13BBAF ΔE 0.038
- Dark Turquoise #00CED1 ΔE 0.043
- Medium Turquoise #48D1CC ΔE 0.043
- Pale Teal #82CBB2 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.055
- Greenblue #23C48B ΔE 0.057
- Green Blue #01C08D ΔE 0.058
Use #3FC6B2 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.