#3FA78B
Closest named color: Greeny Blue (#42B395). oklch(66% 0.105 172.1), rgb(63, 167, 139).
Aa
Black text reads best on this color (7.11:1).
About this color
#3FA78B is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.105 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.035 away. Black text reads best on it, at 7.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 7.11:1 |
| White text | 2.95:1 |
Values
| HEX | #3FA78B |
| RGB | rgb(63, 167, 139) |
| HSL | hsl(164, 45%, 45%) |
| OKLCH | oklch(66% 0.105 172.1) |
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 #3FA78B | 2.95:1 | Fails | Lc -61.1 | Content text, not long reading |
| Black text on #3FA78B | 7.11:1 | AAA | Lc 48.3 | Large or bold text, headings |
| #3FA78B text on white | 2.95:1 | Fails | Lc 55.8 | Large or bold text, headings |
| #3FA78B text on black | 7.11:1 | AAA | Lc -46.0 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C7E0D7
oklch(88.6% 0.029 172)
-
Step 300
300
#A0CCBD
oklch(81% 0.051 172.1)
-
Step 400
400
#68B29B
oklch(70.8% 0.082 171.9)
-
Step 500
500 (this color)
#3FA78B
oklch(66% 0.105 172.1)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#0B4D3D
oklch(37.7% 0.068 171.7)
-
Step 950
950
#0B2D24
oklch(26.9% 0.043 172.4)
#3FA78B 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) | #A29D8A | 0.108 |
| Deuteranopia (no green cones) | #93928D | 0.103 |
| Tritanopia (no blue cones) | #00A89F | 0.032 |
| Achromatopsia (no color) | #969696 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA78B
#3FA78B
oklch(66% 0.105 172.1)
- #C37799
#C37799
oklch(66.1% 0.104 352)
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 #3FA78B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.035
- Persian Green #2A9D8F ΔE 0.036
- Dull Teal #5F9E8F ΔE 0.037
- Jade #1FA774 ΔE 0.039
- Tea #65AB7C ΔE 0.040
- Grey Teal #5E9B8A ΔE 0.040
- Dark Seafoam Green #3EAF76 ΔE 0.044
- Light Sea Green #20B2AA ΔE 0.046
Use #3FA78B 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.