#3FAB9F
Closest named color: Light Sea Green (#20B2AA). oklch(67.7% 0.099 184.9), rgb(63, 171, 159).
Aa
Black text reads best on this color (7.53:1).
About this color
#3FAB9F is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 68%, its chroma 0.099 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.022 away. Black text reads best on it, at 7.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.53:1 |
| White text | 2.78:1 |
Values
| HEX | #3FAB9F |
| RGB | rgb(63, 171, 159) |
| HSL | hsl(173, 46%, 46%) |
| OKLCH | oklch(67.7% 0.099 184.9) |
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 #3FAB9F | 2.78:1 | Fails | Lc -58.6 | Large or bold text, headings |
| Black text on #3FAB9F | 7.53:1 | AAA | Lc 50.6 | Large or bold text, headings |
| #3FAB9F text on white | 2.78:1 | Fails | Lc 53.4 | Large or bold text, headings |
| #3FAB9F text on black | 7.53:1 | AAA | Lc -48.5 | 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
#F0F7F6
oklch(97.1% 0.008 186.9)
-
Step 100
100
#DDEEEB
oklch(93.6% 0.018 184.3)
-
Step 200
200
#C1E1DC
oklch(88.5% 0.034 185.1)
-
Step 300
300
#93CEC6
oklch(80.9% 0.062 185.6)
-
Step 400
400 (this color)
#3FAB9F
oklch(67.7% 0.099 184.9)
-
Step 500
500
#009F92
oklch(63.2% 0.111 184.7)
-
Step 600
600
#00867B
oklch(55.7% 0.098 184.8)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#3FAB9F 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) | #A3A29F | 0.106 |
| Deuteranopia (no green cones) | #9396A0 | 0.100 |
| Tritanopia (no blue cones) | #00AFA7 | 0.020 |
| Achromatopsia (no color) | #9B9B9B | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FAB9F
#3FAB9F
oklch(67.7% 0.099 184.9)
- #CB7D8F
#CB7D8F
oklch(67.7% 0.099 5.1)
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 #3FAB9F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.022
- Greeny Blue #42B395 ΔE 0.032
- Dull Teal #5F9E8F ΔE 0.040
- Cadet Blue #5F9EA0 ΔE 0.043
- Topaz #13BBAF ΔE 0.044
- Persian Green #2A9D8F ΔE 0.046
- Grey Teal #5E9B8A ΔE 0.048
- Sea #3C9992 ΔE 0.052
Use #3FAB9F 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.