#3BB178
Closest named color: Dark Seafoam Green (#3EAF76). oklch(68% 0.135 158.3), rgb(59, 177, 120).
Aa
Black text reads best on this color (7.74:1).
About this color
#3BB178 is a medium-light, moderately saturated green. In OKLCH its lightness is 68%, its chroma 0.135 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.006 away. Black text reads best on it, at 7.74:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | moderately saturated (0.135) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.74:1 |
| White text | 2.71:1 |
Values
| HEX | #3BB178 |
| RGB | rgb(59, 177, 120) |
| HSL | hsl(151, 50%, 46%) |
| OKLCH | oklch(68% 0.135 158.3) |
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 #3BB178 | 2.71:1 | Fails | Lc -57.4 | Large or bold text, headings |
| Black text on #3BB178 | 7.74:1 | AAA | Lc 51.8 | Large or bold text, headings |
| #3BB178 text on white | 2.71:1 | Fails | Lc 52.2 | Large or bold text, headings |
| #3BB178 text on black | 7.74:1 | AAA | Lc -49.7 | 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
#F0F8F3
oklch(97.2% 0.011 158.8)
-
Step 100
100
#DDEFE4
oklch(93.6% 0.024 159.1)
-
Step 200
200
#C0E3CE
oklch(88.5% 0.047 159)
-
Step 300
300
#91D2AC
oklch(80.9% 0.085 158.2)
-
Step 400
400 (this color)
#3BB178
oklch(68% 0.135 158.3)
-
Step 500
500
#00A366
oklch(63% 0.147 158.1)
-
Step 600
600
#008955
oklch(55.5% 0.129 158.2)
-
Step 700
700
#007447
oklch(49.2% 0.115 158)
-
Step 800
800
#005F39
oklch(42.8% 0.1 157.9)
-
Step 900
900
#004F2F
oklch(37.7% 0.088 158.2)
-
Step 950
950
#002F1A
oklch(26.9% 0.063 158.2)
#3BB178 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) | #AFA474 | 0.124 |
| Deuteranopia (no green cones) | #A0997C | 0.122 |
| Tritanopia (no blue cones) | #00B0A2 | 0.061 |
| Achromatopsia (no color) | #9D9D9D | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BB178
#3BB178
oklch(68% 0.135 158.3)
- #CD75B5
#CD75B5
oklch(68% 0.136 338)
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 #3BB178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.006
- Bluey Green #2BB179 ΔE 0.008
- Medium Sea Green #3CB371 ΔE 0.012
- Dark Seafoam #1FB57A ΔE 0.014
- Green Teal #0CB577 ΔE 0.019
- Seaweed Green #35AD6B ΔE 0.019
- Jade Green #2BAF6A ΔE 0.021
- Algae #54AC68 ΔE 0.023
Use #3BB178 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.