#3FA89E
Closest named color: Light Sea Green (#20B2AA). oklch(66.9% 0.097 186.3), rgb(63, 168, 158).
Aa
Black text reads best on this color (7.30:1).
About this color
#3FA89E is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.097 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.029 away. Black text reads best on it, at 7.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 7.30:1 |
| White text | 2.87:1 |
Values
| HEX | #3FA89E |
| RGB | rgb(63, 168, 158) |
| HSL | hsl(174, 45%, 45%) |
| OKLCH | oklch(66.9% 0.097 186.3) |
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 #3FA89E | 2.87:1 | Fails | Lc -60.0 | Large or bold text, headings |
| Black text on #3FA89E | 7.30:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #3FA89E text on white | 2.87:1 | Fails | Lc 54.7 | Large or bold text, headings |
| #3FA89E text on black | 7.30:1 | AAA | Lc -47.1 | 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
#9FCBC5
oklch(80.9% 0.047 186)
-
Step 400
400
#66B0A8
oklch(70.7% 0.075 186.7)
-
Step 500
500 (this color)
#3FA89E
oklch(66.9% 0.097 186.3)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#084C47
oklch(37.7% 0.063 187)
-
Step 950
950
#0A2D29
oklch(27.1% 0.04 184.5)
#3FA89E 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) | #A09F9E | 0.103 |
| Deuteranopia (no green cones) | #90939F | 0.098 |
| Tritanopia (no blue cones) | #00ACA5 | 0.021 |
| Achromatopsia (no color) | #989898 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA89E
#3FA89E
oklch(66.9% 0.097 186.3)
- #C77B8B
#C77B8B
oklch(66.8% 0.096 6.4)
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 #3FA89E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.029
- Dull Teal #5F9E8F ΔE 0.035
- Cadet Blue #5F9EA0 ΔE 0.037
- Persian Green #2A9D8F ΔE 0.039
- Greeny Blue #42B395 ΔE 0.039
- Grey Teal #5E9B8A ΔE 0.042
- Sea #3C9992 ΔE 0.044
- Blue Green #0F9B8E ΔE 0.049
Use #3FA89E 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.