#3FA7A3
Closest named color: Light Sea Green (#20B2AA). oklch(66.8% 0.095 191.6), rgb(63, 167, 163).
Aa
Black text reads best on this color (7.26:1).
About this color
#3FA7A3 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.095 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.031 away. Black text reads best on it, at 7.26:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.26:1 |
| White text | 2.88:1 |
Values
| HEX | #3FA7A3 |
| RGB | rgb(63, 167, 163) |
| HSL | hsl(178, 45%, 45%) |
| OKLCH | oklch(66.8% 0.095 191.6) |
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 #3FA7A3 | 2.88:1 | Fails | Lc -60.2 | Content text, not long reading |
| Black text on #3FA7A3 | 7.26:1 | AAA | Lc 49.2 | Large or bold text, headings |
| #3FA7A3 text on white | 2.88:1 | Fails | Lc 54.9 | Large or bold text, headings |
| #3FA7A3 text on black | 7.26:1 | AAA | Lc -46.9 | 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 500.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E0EDEC
oklch(93.6% 0.014 191.4)
-
Step 200
200
#C7DFDD
oklch(88.5% 0.026 190.6)
-
Step 300
300
#9FCBC8
oklch(81% 0.046 191.1)
-
Step 400
400
#66B0AC
oklch(70.8% 0.074 191.1)
-
Step 500
500 (this color)
#3FA7A3
oklch(66.8% 0.095 191.6)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706D
oklch(49.2% 0.085 191.5)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#084C4A
oklch(37.8% 0.062 191.7)
-
Step 950
950
#0A2C2B
oklch(26.9% 0.038 192.3)
#3FA7A3 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) | #9D9FA3 | 0.099 |
| Deuteranopia (no green cones) | #8D93A4 | 0.093 |
| Tritanopia (no blue cones) | #00ABA5 | 0.021 |
| Achromatopsia (no color) | #989898 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA7A3
#3FA7A3
oklch(66.8% 0.095 191.6)
- #C77C86
#C77C86
oklch(66.8% 0.094 11.3)
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 #3FA7A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.031
- Cadet Blue #5F9EA0 ΔE 0.033
- Dull Teal #5F9E8F ΔE 0.036
- Persian Green #2A9D8F ΔE 0.041
- Sea #3C9992 ΔE 0.043
- Grey Teal #5E9B8A ΔE 0.043
- Greeny Blue #42B395 ΔE 0.047
- Turquoise Blue #06B1C4 ΔE 0.049
Use #3FA7A3 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.