#55B17C
Closest named color: Dark Seafoam Green (#3EAF76). oklch(69% 0.119 156.1), rgb(85, 177, 124).
Aa
Black text reads best on this color (7.96:1).
About this color
#55B17C is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.119 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Seafoam Green (#3EAF76), ΔE 0.021 away. Black text reads best on it, at 7.96:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Seafoam Green (#3EAF76) |
| Black text | 7.96:1 |
| White text | 2.63:1 |
Values
| HEX | #55B17C |
| RGB | rgb(85, 177, 124) |
| HSL | hsl(145, 37%, 51%) |
| OKLCH | oklch(69% 0.119 156.1) |
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 #55B17C | 2.63:1 | Fails | Lc -56.3 | Large or bold text, headings |
| Black text on #55B17C | 7.96:1 | AAA | Lc 52.9 | Large or bold text, headings |
| #55B17C text on white | 2.63:1 | Fails | Lc 51.1 | Large or bold text, headings |
| #55B17C text on black | 7.96:1 | AAA | Lc -50.8 | 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
#DFEEE4
oklch(93.5% 0.021 156.8)
-
Step 200
200
#C4E2CE
oklch(88.5% 0.042 156.3)
-
Step 300
300
#9ACFAD
oklch(80.8% 0.073 156.2)
-
Step 400
400 (this color)
#55B17C
oklch(69% 0.119 156.1)
-
Step 500
500
#05A461
oklch(63.2% 0.152 156)
-
Step 600
600
#008A51
oklch(55.7% 0.135 156.2)
-
Step 700
700
#007443
oklch(49.1% 0.119 156.1)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#032F19
oklch(27% 0.062 156.1)
#55B17C 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) | #B0A579 | 0.108 |
| Deuteranopia (no green cones) | #A39C7F | 0.104 |
| Tritanopia (no blue cones) | #3BB0A3 | 0.057 |
| Achromatopsia (no color) | #9F9F9F | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55B17C
#55B17C
oklch(69% 0.119 156.1)
- #C97EB7
#C97EB7
oklch(69% 0.118 336.1)
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 #55B17C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Seafoam Green #3EAF76 ΔE 0.021
- Tea #65AB7C ΔE 0.021
- Medium Sea Green #3CB371 ΔE 0.026
- Algae #54AC68 ΔE 0.026
- Bluey Green #2BB179 ΔE 0.027
- Dark Seafoam #1FB57A ΔE 0.031
- Boring Green #63B365 ΔE 0.032
- Greeny Blue #42B395 ΔE 0.033
Use #55B17C 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.