#13B559
Closest named color: Shamrock (#01B44C). oklch(67.8% 0.179 150.7), rgb(19, 181, 89).
Aa
Black text reads best on this color (7.78:1).
About this color
#13B559 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.179 and its hue 151°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.015 away. Black text reads best on it, at 7.78:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.78:1 |
| White text | 2.69:1 |
Values
| HEX | #13B559 |
| RGB | rgb(19, 181, 89) |
| HSL | hsl(146, 81%, 39%) |
| OKLCH | oklch(67.8% 0.179 150.7) |
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 #13B559 | 2.69:1 | Fails | Lc -56.9 | Large or bold text, headings |
| Black text on #13B559 | 7.78:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #13B559 text on white | 2.69:1 | Fails | Lc 51.7 | Large or bold text, headings |
| #13B559 text on black | 7.78:1 | AAA | Lc -50.2 | 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
#EFF8F0
oklch(97% 0.014 148.8)
-
Step 100
100
#DBF0DF
oklch(93.5% 0.032 151.2)
-
Step 200
200
#BCE5C4
oklch(88.4% 0.062 150.7)
-
Step 300
300
#89D59B
oklch(80.8% 0.112 150.8)
-
Step 400
400 (this color)
#13B559
oklch(67.8% 0.179 150.7)
-
Step 500
500
#00A54F
oklch(63.2% 0.171 150.8)
-
Step 600
600
#008B41
oklch(55.7% 0.151 150.7)
-
Step 700
700
#007536
oklch(49.2% 0.133 150.8)
-
Step 800
800
#00602B
oklch(42.8% 0.116 150.8)
-
Step 900
900
#005023
oklch(37.7% 0.102 150.9)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#13B559 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) | #B6A551 | 0.149 |
| Deuteranopia (no green cones) | #A59960 | 0.146 |
| Tritanopia (no blue cones) | #00B2A0 | 0.099 |
| Achromatopsia (no color) | #9D9D9D | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #13B559
#13B559
oklch(67.8% 0.179 150.7)
- #D368CA
#D368CA
oklch(67.7% 0.179 330.6)
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 #13B559, closest first.
No curated palette has a color within ΔE 0.04 of #13B559.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.015
- Cool Green #33B864 ΔE 0.020
- Medium Green #39AD48 ΔE 0.024
- Jade Green #2BAF6A ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.036
- Green Teal #0CB577 ΔE 0.037
- Leafy Green #51B73B ΔE 0.037
- Medium Sea Green #3CB371 ΔE 0.038
Use #13B559 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.