#3FC4B2
Closest named color: Topaz (#13BBAF). oklch(74.5% 0.116 182.2), rgb(63, 196, 178).
Aa
Black text reads best on this color (9.75:1).
About this color
#3FC4B2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.116 and its hue 182°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.032 away. Black text reads best on it, at 9.75:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.75:1 |
| White text | 2.15:1 |
Values
| HEX | #3FC4B2 |
| RGB | rgb(63, 196, 178) |
| HSL | hsl(172, 53%, 51%) |
| OKLCH | oklch(74.5% 0.116 182.2) |
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 #3FC4B2 | 2.15:1 | Fails | Lc -46.6 | Large or bold text, headings |
| Black text on #3FC4B2 | 9.75:1 | AAA | Lc 62.0 | Content text, not long reading |
| #3FC4B2 text on white | 2.15:1 | Fails | Lc 41.9 | Non-text elements, placeholder text |
| #3FC4B2 text on black | 9.75:1 | AAA | Lc -60.3 | 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
#DBEFEB
oklch(93.6% 0.022 182.5)
-
Step 200
200
#BDE2DB
oklch(88.4% 0.04 182.6)
-
Step 300
300
#8AD0C4
oklch(80.8% 0.073 182.5)
-
Step 400
400 (this color)
#3FC4B2
oklch(74.5% 0.116 182.2)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C52
oklch(42.6% 0.076 182.2)
-
Step 900
900
#004D44
oklch(37.7% 0.068 181.7)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#3FC4B2 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) | #BBB9B1 | 0.123 |
| Deuteranopia (no green cones) | #A8ABB4 | 0.117 |
| Tritanopia (no blue cones) | #00C8BE | 0.020 |
| Achromatopsia (no color) | #B1B1B1 | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FC4B2
#3FC4B2
oklch(74.5% 0.116 182.2)
- #E98CA6
#E98CA6
oklch(74.5% 0.117 2.3)
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 #3FC4B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.032
- Medium Aquamarine #66CDAA ΔE 0.042
- Dark Turquoise #00CED1 ΔE 0.044
- Medium Turquoise #48D1CC ΔE 0.046
- Greeny Blue #42B395 ΔE 0.054
- Light Sea Green #20B2AA ΔE 0.055
- Green Blue #01C08D ΔE 0.058
- Pale Teal #82CBB2 ΔE 0.058
Use #3FC4B2 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.