#55E178
Closest named color: Weird Green (#3AE57F). oklch(81% 0.189 148.6), rgb(85, 225, 120).
Aa
Black text reads best on this color (12.42:1).
About this color
#55E178 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.189 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Weird Green (#3AE57F), ΔE 0.014 away. Black text reads best on it, at 12.42:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.189) |
| Temperature | in between |
| Nearest name | Weird Green (#3AE57F) |
| Black text | 12.42:1 |
| White text | 1.68:1 |
Values
| HEX | #55E178 |
| RGB | rgb(85, 225, 120) |
| HSL | hsl(135, 70%, 61%) |
| OKLCH | oklch(81% 0.189 148.6) |
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 #55E178 | 1.68:1 | Fails | Lc -33.4 | Non-text elements, placeholder text |
| Black text on #55E178 | 12.42:1 | AAA | Lc 74.2 | Content text, not long reading |
| #55E178 text on white | 1.68:1 | Fails | Lc 29.7 | Dividers and decoration only |
| #55E178 text on black | 12.42:1 | AAA | Lc -73.2 | Content text, not long reading |
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 300.
-
Step 50
50
#EBFBEC
oklch(97.2% 0.026 147.2)
-
Step 100
100
#D2F5D6
oklch(93.7% 0.055 148.3)
-
Step 200
200
#A8EDB3
oklch(88.5% 0.105 148.8)
-
Step 300
300 (this color)
#55E178
oklch(81% 0.189 148.6)
-
Step 400
400
#00C151
oklch(70.8% 0.202 148.5)
-
Step 500
500
#00A545
oklch(63% 0.179 148.7)
-
Step 600
600
#008B39
oklch(55.6% 0.158 148.7)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006025
oklch(42.7% 0.121 148.7)
-
Step 900
900
#00501D
oklch(37.6% 0.108 148.5)
-
Step 950
950
#00300F
oklch(27% 0.076 148.8)
#55E178 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) | #E3CF70 | 0.153 |
| Deuteranopia (no green cones) | #D1C27F | 0.151 |
| Tritanopia (no blue cones) | #2ADDC8 | 0.107 |
| Achromatopsia (no color) | #C7C7C7 | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55E178
#55E178
oklch(81% 0.189 148.6)
- #FF92FA
#FF92FA
oklch(80.9% 0.182 328.8)
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 #55E178, closest first.
No curated palette has a color within ΔE 0.04 of #55E178.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Weird Green #3AE57F ΔE 0.014
- Aqua Green #12E193 ΔE 0.035
- Fresh Green #69D84F ΔE 0.039
- Turquoise Green #04F489 ΔE 0.050
- Seaweed #18D17B ΔE 0.056
- Toxic Green #61DE2A ΔE 0.060
- Minty Green #0BF77D ΔE 0.060
- Wintergreen #20F986 ΔE 0.063
Use #55E178 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.