#55A951
Closest named color: Mid Green (#50A747). oklch(66.1% 0.149 142.8), rgb(85, 169, 81).
Aa
Black text reads best on this color (7.18:1).
About this color
#55A951 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.149 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.013 away. Black text reads best on it, at 7.18:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 7.18:1 |
| White text | 2.92:1 |
Values
| HEX | #55A951 |
| RGB | rgb(85, 169, 81) |
| HSL | hsl(117, 35%, 49%) |
| OKLCH | oklch(66.1% 0.149 142.8) |
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 #55A951 | 2.92:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #55A951 | 7.18:1 | AAA | Lc 48.6 | Large or bold text, headings |
| #55A951 text on white | 2.92:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #55A951 text on black | 7.18:1 | AAA | Lc -46.4 | 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 500.
-
Step 50
50
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE0C8
oklch(88.4% 0.04 142.9)
-
Step 300
300
#A6CDA2
oklch(80.9% 0.073 142.4)
-
Step 400
400
#74B36F
oklch(70.7% 0.116 142.6)
-
Step 500
500 (this color)
#55A951
oklch(66.1% 0.149 142.8)
-
Step 600
600
#298A27
oklch(55.7% 0.162 142.8)
-
Step 700
700
#197519
oklch(49.2% 0.151 142.8)
-
Step 800
800
#195F18
oklch(42.7% 0.124 142.8)
-
Step 900
900
#1C4E1B
oklch(37.7% 0.097 143)
-
Step 950
950
#122E11
oklch(27.1% 0.061 143)
#55A951 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) | #AC9C49 | 0.108 |
| Deuteranopia (no green cones) | #A19457 | 0.108 |
| Tritanopia (no blue cones) | #4AA595 | 0.095 |
| Achromatopsia (no color) | #979797 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55A951
#55A951
oklch(66.1% 0.149 142.8)
- #BD70C7
#BD70C7
oklch(66.1% 0.149 322.8)
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 #55A951, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.013
- Fern #63A950 ΔE 0.013
- Dark Pastel Green #56AE57 ΔE 0.014
- Algae #54AC68 ΔE 0.026
- Medium Green #39AD48 ΔE 0.027
- Off Green #6BA353 ΔE 0.027
- Muted Green #5FA052 ΔE 0.027
- Seaweed Green #35AD6B ΔE 0.031
Use #55A951 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.