#5BC559
Closest named color: Apple (#6ECB3C). oklch(73.6% 0.177 143.2), rgb(91, 197, 89).
Aa
Black text reads best on this color (9.57:1).
About this color
#5BC559 is a medium-light, vivid green. In OKLCH its lightness is 74%, its chroma 0.177 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Apple (#6ECB3C), ΔE 0.035 away. Black text reads best on it, at 9.57:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Apple (#6ECB3C) |
| Black text | 9.57:1 |
| White text | 2.19:1 |
Values
| HEX | #5BC559 |
| RGB | rgb(91, 197, 89) |
| HSL | hsl(119, 48%, 56%) |
| OKLCH | oklch(73.6% 0.177 143.2) |
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 #5BC559 | 2.19:1 | Fails | Lc -47.6 | Large or bold text, headings |
| Black text on #5BC559 | 9.57:1 | AAA | Lc 61.1 | Content text, not long reading |
| #5BC559 text on white | 2.19:1 | Fails | Lc 42.8 | Non-text elements, placeholder text |
| #5BC559 text on black | 9.57:1 | AAA | Lc -59.3 | 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
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DEF0DC
oklch(93.6% 0.033 142.5)
-
Step 200
200
#C2E4BF
oklch(88.4% 0.062 142.9)
-
Step 300
300
#95D392
oklch(80.8% 0.11 143.4)
-
Step 400
400 (this color)
#5BC559
oklch(73.6% 0.177 143.2)
-
Step 500
500
#00A715
oklch(63.2% 0.21 143.2)
-
Step 600
600
#008C10
oklch(55.5% 0.184 143.2)
-
Step 700
700
#00760B
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
#003102
oklch(27.2% 0.09 143.2)
#5BC559 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) | #C9B54F | 0.130 |
| Deuteranopia (no green cones) | #BBAB61 | 0.130 |
| Tritanopia (no blue cones) | #4BC0AD | 0.112 |
| Achromatopsia (no color) | #AFAFAF | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BC559
#5BC559
oklch(73.6% 0.177 143.2)
- #DE7FE9
#DE7FE9
oklch(73.7% 0.177 323.3)
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 #5BC559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Apple #6ECB3C ΔE 0.035
- Dark Mint #48C072 ΔE 0.036
- Algae Green #21C36F ΔE 0.036
- Turtle Green #75B84F ΔE 0.038
- Soft Green #6FC276 ΔE 0.043
- Seaweed #18D17B ΔE 0.043
- Shamrock Green #02C14D ΔE 0.043
- Dark Mint Green #20C073 ΔE 0.045
Use #5BC559 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.