#3FBDB9
Closest named color: Topaz (#13BBAF). oklch(73% 0.108 192), rgb(63, 189, 185).
Aa
Black text reads best on this color (9.19:1).
About this color
#3FBDB9 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.108 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.024 away. Black text reads best on it, at 9.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.19:1 |
| White text | 2.28:1 |
Values
| HEX | #3FBDB9 |
| RGB | rgb(63, 189, 185) |
| HSL | hsl(178, 50%, 49%) |
| OKLCH | oklch(73% 0.108 192) |
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 #3FBDB9 | 2.28:1 | Fails | Lc -49.6 | Large or bold text, headings |
| Black text on #3FBDB9 | 9.19:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #3FBDB9 text on white | 2.28:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #3FBDB9 text on black | 9.19:1 | AAA | Lc -57.4 | 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
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DCEEED
oklch(93.6% 0.019 192.8)
-
Step 200
200
#BEE2DF
oklch(88.6% 0.038 190.3)
-
Step 300
300
#8CCFCC
oklch(80.9% 0.068 192.3)
-
Step 400
400 (this color)
#3FBDB9
oklch(73% 0.108 192)
-
Step 500
500
#009E9A
oklch(63.2% 0.109 191.6)
-
Step 600
600
#008582
oklch(55.7% 0.096 192)
-
Step 700
700
#006F6D
oklch(49% 0.084 192.6)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#3FBDB9 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) | #B2B4B9 | 0.114 |
| Deuteranopia (no green cones) | #9FA6BA | 0.106 |
| Tritanopia (no blue cones) | #00C2BB | 0.019 |
| Achromatopsia (no color) | #ABABAB | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FBDB9
#3FBDB9
oklch(73% 0.108 192)
- #E38A95
#E38A95
oklch(72.9% 0.109 12.1)
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 #3FBDB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.024
- Light Sea Green #20B2AA ΔE 0.039
- Turquoise Blue #06B1C4 ΔE 0.048
- Dark Turquoise #00CED1 ΔE 0.049
- Greeny Blue #42B395 ΔE 0.052
- Medium Turquoise #48D1CC ΔE 0.058
- Medium Aquamarine #66CDAA ΔE 0.064
- Green Blue #01C08D ΔE 0.072
Use #3FBDB9 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.