#3FA59E
Closest named color: Dull Teal (#5F9E8F). oklch(66.1% 0.094 188.8), rgb(63, 165, 158).
Aa
Black text reads best on this color (7.08:1).
About this color
#3FA59E is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.094 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Teal (#5F9E8F), ΔE 0.031 away. Black text reads best on it, at 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dull Teal (#5F9E8F) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #3FA59E |
| RGB | rgb(63, 165, 158) |
| HSL | hsl(176, 45%, 45%) |
| OKLCH | oklch(66.1% 0.094 188.8) |
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 #3FA59E | 2.96:1 | Fails | Lc -61.2 | Content text, not long reading |
| Black text on #3FA59E | 7.08:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #3FA59E text on white | 2.96:1 | Fails | Lc 55.9 | Large or bold text, headings |
| #3FA59E text on black | 7.08:1 | AAA | Lc -45.9 | 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
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C7DFDC
oklch(88.5% 0.026 187.6)
-
Step 300
300
#9FCBC6
oklch(80.9% 0.047 187.7)
-
Step 400
400
#67B0AA
oklch(70.8% 0.074 188.9)
-
Step 500
500 (this color)
#3FA59E
oklch(66.1% 0.094 188.8)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#0B4C48
oklch(37.8% 0.061 188.5)
-
Step 950
950
#0B2C2A
oklch(26.9% 0.038 189.5)
#3FA59E 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) | #9C9D9E | 0.099 |
| Deuteranopia (no green cones) | #8C919F | 0.093 |
| Tritanopia (no blue cones) | #00A9A3 | 0.021 |
| Achromatopsia (no color) | #969696 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA59E
#3FA59E
oklch(66.1% 0.094 188.8)
- #C47A87
#C47A87
oklch(66.1% 0.093 8.5)
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 #3FA59E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Teal #5F9E8F ΔE 0.031
- Cadet Blue #5F9EA0 ΔE 0.032
- Persian Green #2A9D8F ΔE 0.033
- Sea #3C9992 ΔE 0.036
- Light Sea Green #20B2AA ΔE 0.036
- Grey Teal #5E9B8A ΔE 0.037
- Blue Green #0F9B8E ΔE 0.043
- Greeny Blue #42B395 ΔE 0.048
Use #3FA59E 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.