#5BCC78
Closest named color: Seaweed (#18D17B). oklch(75.9% 0.158 149.6), rgb(91, 204, 120).
Aa
Black text reads best on this color (10.35:1).
About this color
#5BCC78 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.158 and its hue 150°. 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 10.35:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.35:1 |
| White text | 2.02:1 |
Values
| HEX | #5BCC78 |
| RGB | rgb(91, 204, 120) |
| HSL | hsl(135, 53%, 58%) |
| OKLCH | oklch(75.9% 0.158 149.6) |
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 #5BCC78 | 2.02:1 | Fails | Lc -43.6 | Non-text elements, placeholder text |
| Black text on #5BCC78 | 10.35:1 | AAA | Lc 64.8 | Content text, not long reading |
| #5BCC78 text on white | 2.02:1 | Fails | Lc 39.1 | Non-text elements, placeholder text |
| #5BCC78 text on black | 10.35:1 | AAA | Lc -63.2 | 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 300.
-
Step 50
50
#ECFAEE
oklch(97.1% 0.022 149.7)
-
Step 100
100
#D5F3DA
oklch(93.6% 0.046 150.1)
-
Step 200
200
#B0EABA
oklch(88.5% 0.088 149.5)
-
Step 300
300 (this color)
#5BCC78
oklch(75.9% 0.158 149.6)
-
Step 400
400
#00C057
oklch(70.6% 0.196 149.7)
-
Step 500
500
#00A549
oklch(63.1% 0.176 149.5)
-
Step 600
600
#008B3D
oklch(55.6% 0.154 149.7)
-
Step 700
700
#007532
oklch(49.1% 0.137 149.6)
-
Step 800
800
#006028
oklch(42.7% 0.119 149.7)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#003010
oklch(27% 0.075 149.4)
#5BCC78 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) | #CDBC72 | 0.131 |
| Deuteranopia (no green cones) | #BEB27D | 0.128 |
| Tritanopia (no blue cones) | #40C9B7 | 0.087 |
| Achromatopsia (no color) | #B6B6B6 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCC78
#5BCC78
oklch(75.9% 0.158 149.6)
- #E789E1
#E789E1
oklch(75.8% 0.158 329.3)
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 #5BCC78, 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 0.030
- Dark Mint #48C072 ΔE 0.038
- Algae Green #21C36F ΔE 0.044
- Greenblue #23C48B ΔE 0.047
- Dark Mint Green #20C073 ΔE 0.050
- Emerald #06D6A0 ΔE 0.051
- Apple #6ECB3C ΔE 0.056
Use #5BCC78 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.