#55B153
Closest named color: Dark Pastel Green (#56AE57). oklch(68.2% 0.158 143.2), rgb(85, 177, 83).
Aa
Black text reads best on this color (7.80:1).
About this color
#55B153 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.158 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Pastel Green (#56AE57), ΔE 0.011 away. Black text reads best on it, at 7.80:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Dark Pastel Green (#56AE57) |
| Black text | 7.80:1 |
| White text | 2.69:1 |
Values
| HEX | #55B153 |
| RGB | rgb(85, 177, 83) |
| HSL | hsl(119, 38%, 51%) |
| OKLCH | oklch(68.2% 0.158 143.2) |
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 #55B153 | 2.69:1 | Fails | Lc -57.2 | Large or bold text, headings |
| Black text on #55B153 | 7.80:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #55B153 text on white | 2.69:1 | Fails | Lc 52.0 | Large or bold text, headings |
| #55B153 text on black | 7.80:1 | 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
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DFEFDE
oklch(93.6% 0.028 143.7)
-
Step 200
200
#C5E3C2
oklch(88.5% 0.055 142.6)
-
Step 300
300
#9AD197
oklch(80.8% 0.098 143.3)
-
Step 400
400 (this color)
#55B153
oklch(68.2% 0.158 143.2)
-
Step 500
500
#17A620
oklch(63.1% 0.202 143.2)
-
Step 600
600
#008C10
oklch(55.5% 0.184 143.2)
-
Step 700
700
#00760C
oklch(49.1% 0.163 143.2)
-
Step 800
800
#006108
oklch(42.7% 0.142 143.2)
-
Step 900
900
#005105
oklch(37.7% 0.126 143.2)
-
Step 950
950
#043005
oklch(27% 0.084 143.1)
#55B153 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) | #B4A34B | 0.115 |
| Deuteranopia (no green cones) | #A89A5A | 0.116 |
| Tritanopia (no blue cones) | #48AC9C | 0.101 |
| Achromatopsia (no color) | #9E9E9E | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55B153
#55B153
oklch(68.2% 0.158 143.2)
- #C774D1
#C774D1
oklch(68.3% 0.158 323.1)
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 #55B153, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Pastel Green #56AE57 ΔE 0.011
- Fern #63A950 ΔE 0.024
- Cool Green #33B864 ΔE 0.026
- Boring Green #63B365 ΔE 0.026
- Medium Green #39AD48 ΔE 0.028
- Mid Green #50A747 ΔE 0.030
- Grass #5CAC2D ΔE 0.031
- Algae #54AC68 ΔE 0.032
Use #55B153 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.