#3FBB91
Closest named color: Green Blue (#01C08D). oklch(71.3% 0.126 166.6), rgb(63, 187, 145).
Aa
Black text reads best on this color (8.72:1).
About this color
#3FBB91 is a medium-light, moderately saturated green. In OKLCH its lightness is 71%, its chroma 0.126 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Green Blue (#01C08D), ΔE 0.024 away. Black text reads best on it, at 8.72:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Green Blue (#01C08D) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #3FBB91 |
| RGB | rgb(63, 187, 145) |
| HSL | hsl(160, 50%, 49%) |
| OKLCH | oklch(71.3% 0.126 166.6) |
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 #3FBB91 | 2.40:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #3FBB91 | 8.72:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #3FBB91 text on white | 2.40:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #3FBB91 text on black | 8.72:1 | AAA | Lc -55.0 | 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 400.
-
Step 50
50
#EFF8F4
oklch(97.1% 0.011 167.8)
-
Step 100
100
#DCEFE6
oklch(93.6% 0.023 165.8)
-
Step 200
200
#BFE3D3
oklch(88.5% 0.044 166.7)
-
Step 300
300
#8FD1B6
oklch(80.9% 0.077 167)
-
Step 400
400 (this color)
#3FBB91
oklch(71.3% 0.126 166.6)
-
Step 500
500
#00A278
oklch(63.2% 0.13 166.5)
-
Step 600
600
#008864
oklch(55.6% 0.115 166.4)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#3FBB91 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) | #B7AE8F | 0.126 |
| Deuteranopia (no green cones) | #A6A294 | 0.121 |
| Tritanopia (no blue cones) | #00BCAF | 0.043 |
| Achromatopsia (no color) | #A7A7A7 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FBB91
#3FBB91
oklch(71.3% 0.126 166.6)
- #DA81B2
#DA81B2
oklch(71.3% 0.124 346.6)
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 #3FBB91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Green Blue #01C08D ΔE 0.024
- Greeny Blue #42B395 ΔE 0.026
- Greenblue #23C48B ΔE 0.031
- Dark Seafoam #1FB57A ΔE 0.038
- Bluey Green #2BB179 ΔE 0.042
- Dark Seafoam Green #3EAF76 ΔE 0.043
- Topaz #13BBAF ΔE 0.043
- Medium Sea Green #3CB371 ΔE 0.044
Use #3FBB91 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.