#3FC3B2
Closest named color: Topaz (#13BBAF). oklch(74.2% 0.115 182.8), rgb(63, 195, 178).
Aa
Black text reads best on this color (9.66:1).
About this color
#3FC3B2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.115 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.030 away. Black text reads best on it, at 9.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.115) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.66:1 |
| White text | 2.17:1 |
Values
| HEX | #3FC3B2 |
| RGB | rgb(63, 195, 178) |
| HSL | hsl(172, 52%, 51%) |
| OKLCH | oklch(74.2% 0.115 182.8) |
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 #3FC3B2 | 2.17:1 | Fails | Lc -47.1 | Large or bold text, headings |
| Black text on #3FC3B2 | 9.66:1 | AAA | Lc 61.6 | Content text, not long reading |
| #3FC3B2 text on white | 2.17:1 | Fails | Lc 42.4 | Non-text elements, placeholder text |
| #3FC3B2 text on black | 9.66:1 | AAA | Lc -59.8 | 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
#EFF8F6
oklch(97.2% 0.01 181.4)
-
Step 100
100
#DCEFEB
oklch(93.7% 0.021 181.9)
-
Step 200
200
#BDE2DB
oklch(88.4% 0.04 182.6)
-
Step 300
300
#8BD0C5
oklch(80.9% 0.071 183.4)
-
Step 400
400 (this color)
#3FC3B2
oklch(74.2% 0.115 182.8)
-
Step 500
500
#009F90
oklch(63.1% 0.112 183.2)
-
Step 600
600
#008679
oklch(55.7% 0.099 183.1)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#3FC3B2 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) | #BAB8B1 | 0.122 |
| Deuteranopia (no green cones) | #A7AAB4 | 0.116 |
| Tritanopia (no blue cones) | #00C7BE | 0.020 |
| Achromatopsia (no color) | #B0B0B0 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC3B2
#3FC3B2
oklch(74.2% 0.115 182.8)
- #E88CA5
#E88CA5
oklch(74.3% 0.115 2.7)
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 #3FC3B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.030
- Medium Aquamarine #66CDAA ΔE 0.044
- Dark Turquoise #00CED1 ΔE 0.045
- Medium Turquoise #48D1CC ΔE 0.048
- Greeny Blue #42B395 ΔE 0.052
- Light Sea Green #20B2AA ΔE 0.052
- Green Blue #01C08D ΔE 0.058
- Pale Teal #82CBB2 ΔE 0.060
Use #3FC3B2 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.