#3F9178
Closest named color: Dusty Teal (#4C9085). oklch(59.8% 0.089 170.5), rgb(63, 145, 120).
Aa
Black text reads best on this color (5.53:1).
About this color
#3F9178 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.089 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.025 away. Black text reads best on it, at 5.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.53:1 |
| White text | 3.79:1 |
Values
| HEX | #3F9178 |
| RGB | rgb(63, 145, 120) |
| HSL | hsl(162, 39%, 41%) |
| OKLCH | oklch(59.8% 0.089 170.5) |
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 #3F9178 | 3.79:1 | AA large text | Lc -70.8 | Content text, not long reading |
| Black text on #3F9178 | 5.53:1 | AA | Lc 38.8 | Non-text elements, placeholder text |
| #3F9178 text on white | 3.79:1 | AA large text | Lc 65.3 | Content text, not long reading |
| #3F9178 text on black | 5.53:1 | AA | Lc -36.4 | Non-text elements, placeholder text |
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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE8
oklch(93.6% 0.013 167.2)
-
Step 200
200
#CADFD7
oklch(88.6% 0.025 170.9)
-
Step 300
300
#A5CABC
oklch(80.8% 0.044 170.2)
-
Step 400
400
#73AF9A
oklch(70.7% 0.07 170.2)
-
Step 500
500 (this color)
#3F9178
oklch(59.8% 0.089 170.5)
-
Step 600
600
#25856B
oklch(55.5% 0.097 170.7)
-
Step 700
700
#157159
oklch(49.1% 0.091 170.2)
-
Step 800
800
#165C49
oklch(42.7% 0.075 170.5)
-
Step 900
900
#1B4C3D
oklch(37.8% 0.059 169.9)
-
Step 950
950
#112C24
oklch(26.9% 0.037 171.8)
#3F9178 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) | #8D8877 | 0.092 |
| Deuteranopia (no green cones) | #817F7A | 0.089 |
| Tritanopia (no blue cones) | #14928A | 0.031 |
| Achromatopsia (no color) | #838383 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F9178
#3F9178
oklch(59.8% 0.089 170.5)
- #A86987
#A86987
oklch(59.8% 0.089 350.1)
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 #3F9178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.025
- Ocean Green #3D9973 ΔE 0.028
- Viridian #1E9167 ΔE 0.034
- Slate Green #658D6D ΔE 0.036
- Blue Green #0F9B8E ΔE 0.037
- Sea #3C9992 ΔE 0.039
- Persian Green #2A9D8F ΔE 0.040
- Teal Green #0A9396 ΔE 0.046
Use #3F9178 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.