#5BCB6C
Closest named color: Seaweed (#18D17B). oklch(75.4% 0.168 146.7), rgb(91, 203, 108).
Aa
Black text reads best on this color (10.20:1).
About this color
#5BCB6C is a medium-light, vivid green. In OKLCH its lightness is 75%, its chroma 0.168 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.030 away. Black text reads best on it, at 10.20:1.
| Hue family | Greens |
| Lightness | medium-light (75%) |
| Chroma | vivid (0.168) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.20:1 |
| White text | 2.05:1 |
Values
| HEX | #5BCB6C |
| RGB | rgb(91, 203, 108) |
| HSL | hsl(129, 52%, 58%) |
| OKLCH | oklch(75.4% 0.168 146.7) |
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 #5BCB6C | 2.05:1 | Fails | Lc -44.4 | Non-text elements, placeholder text |
| Black text on #5BCB6C | 10.20:1 | AAA | Lc 64.1 | Content text, not long reading |
| #5BCB6C text on white | 2.05:1 | Fails | Lc 39.8 | Non-text elements, placeholder text |
| #5BCB6C text on black | 10.20:1 | AAA | Lc -62.5 | 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 400.
-
Step 50
50
#F0F8F0
oklch(97.1% 0.014 145.5)
-
Step 100
100
#DDF0DE
oklch(93.6% 0.031 146.8)
-
Step 200
200
#C1E4C3
oklch(88.5% 0.058 146.6)
-
Step 300
300
#93D399
oklch(80.8% 0.104 146.9)
-
Step 400
400 (this color)
#5BCB6C
oklch(75.4% 0.168 146.7)
-
Step 500
500
#00A63A
oklch(63.2% 0.189 146.7)
-
Step 600
600
#008C2F
oklch(55.7% 0.167 146.6)
-
Step 700
700
#007526
oklch(49% 0.147 146.7)
-
Step 800
800
#00601E
oklch(42.6% 0.127 146.7)
-
Step 900
900
#005018
oklch(37.6% 0.112 146.9)
-
Step 950
950
#00300B
oklch(26.9% 0.08 146.8)
#5BCB6C 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) | #CDBB64 | 0.131 |
| Deuteranopia (no green cones) | #BFB172 | 0.130 |
| Tritanopia (no blue cones) | #45C7B4 | 0.098 |
| Achromatopsia (no color) | #B5B5B5 | 0.169 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCB6C
#5BCB6C
oklch(75.4% 0.168 146.7)
- #E686E7
#E686E7
oklch(75.5% 0.168 326.7)
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 #5BCB6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.030
- Soft Green #6FC276 ΔE 0.035
- Dark Mint #48C072 ΔE 0.038
- Algae Green #21C36F ΔE 0.041
- Apple #6ECB3C ΔE 0.043
- Dark Mint Green #20C073 ΔE 0.049
- Turtle Green #75B84F ΔE 0.052
- Fresh Green #69D84F ΔE 0.053
Use #5BCB6C 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.