#3BB181
Closest named color: Dark Seafoam Green (#3EAF76). oklch(68.2% 0.127 162.3), rgb(59, 177, 129).
Aa
Black text reads best on this color (7.79:1).
About this color
#3BB181 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.127 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.014 away. Black text reads best on it, at 7.79:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.79:1 |
| White text | 2.69:1 |
Values
| HEX | #3BB181 |
| RGB | rgb(59, 177, 129) |
| HSL | hsl(156, 50%, 46%) |
| OKLCH | oklch(68.2% 0.127 162.3) |
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 #3BB181 | 2.69:1 | Fails | Lc -57.1 | Large or bold text, headings |
| Black text on #3BB181 | 7.79:1 | AAA | Lc 52.1 | Large or bold text, headings |
| #3BB181 text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #3BB181 text on black | 7.79:1 | AAA | Lc -49.9 | 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 400.
-
Step 50
50
#EFF8F3
oklch(97.1% 0.012 162.1)
-
Step 100
100
#DDEFE5
oklch(93.6% 0.023 161.7)
-
Step 200
200
#C0E3D0
oklch(88.5% 0.045 161.6)
-
Step 300
300
#91D1B1
oklch(80.8% 0.08 162.2)
-
Step 400
400 (this color)
#3BB181
oklch(68.2% 0.127 162.3)
-
Step 500
500
#00A270
oklch(63% 0.137 162.6)
-
Step 600
600
#00895D
oklch(55.7% 0.122 162)
-
Step 700
700
#00734E
oklch(49.1% 0.107 162.4)
-
Step 800
800
#005E3F
oklch(42.6% 0.093 162.3)
-
Step 900
900
#004F34
oklch(37.8% 0.083 162.1)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#3BB181 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) | #AEA47E | 0.123 |
| Deuteranopia (no green cones) | #9F9984 | 0.120 |
| Tritanopia (no blue cones) | #00B1A4 | 0.050 |
| Achromatopsia (no color) | #9E9E9E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BB181
#3BB181
oklch(68.2% 0.127 162.3)
- #CE77AE
#CE77AE
oklch(68.1% 0.128 342.5)
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 #3BB181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.014
- Bluey Green #2BB179 ΔE 0.015
- Dark Seafoam #1FB57A ΔE 0.021
- Medium Sea Green #3CB371 ΔE 0.024
- Green Teal #0CB577 ΔE 0.027
- Greeny Blue #42B395 ΔE 0.029
- Seaweed Green #35AD6B ΔE 0.030
- Algae #54AC68 ΔE 0.031
Use #3BB181 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.