#5BCF91
Closest named color: Emerald (#06D6A0). oklch(77.1% 0.139 157.3), rgb(91, 207, 145).
Aa
Black text reads best on this color (10.77:1).
About this color
#5BCF91 is a medium-light, moderately saturated green. In OKLCH its lightness is 77%, its chroma 0.139 and its hue 157°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Emerald (#06D6A0), ΔE 0.032 away. Black text reads best on it, at 10.77:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Emerald (#06D6A0) |
| Black text | 10.77:1 |
| White text | 1.94:1 |
Values
| HEX | #5BCF91 |
| RGB | rgb(91, 207, 145) |
| HSL | hsl(148, 55%, 58%) |
| OKLCH | oklch(77.1% 0.139 157.3) |
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 #5BCF91 | 1.94:1 | Fails | Lc -41.5 | Non-text elements, placeholder text |
| Black text on #5BCF91 | 10.77:1 | AAA | Lc 66.7 | Content text, not long reading |
| #5BCF91 text on white | 1.94:1 | Fails | Lc 37.2 | Non-text elements, placeholder text |
| #5BCF91 text on black | 10.77:1 | AAA | Lc -65.3 | 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
#ECF9F1
oklch(97% 0.017 159.1)
-
Step 100
100
#D5F3DF
oklch(93.7% 0.041 156.3)
-
Step 200
200
#AFE9C5
oklch(88.5% 0.077 157.2)
-
Step 300
300 (this color)
#5BCF91
oklch(77.1% 0.139 157.3)
-
Step 400
400
#00BF76
oklch(70.8% 0.167 157.4)
-
Step 500
500
#00A364
oklch(63% 0.149 157.4)
-
Step 600
600
#008953
oklch(55.5% 0.131 157.3)
-
Step 700
700
#007445
oklch(49.2% 0.117 157)
-
Step 800
800
#005F38
oklch(42.7% 0.101 157.3)
-
Step 900
900
#004F2E
oklch(37.6% 0.089 157.5)
-
Step 950
950
#002F19
oklch(26.9% 0.064 157.1)
#5BCF91 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) | #CEC18D | 0.128 |
| Deuteranopia (no green cones) | #BDB595 | 0.124 |
| Tritanopia (no blue cones) | #33CEBE | 0.064 |
| Achromatopsia (no color) | #BABABA | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCF91
#5BCF91
oklch(77.1% 0.139 157.3)
- #ED90D4
#ED90D4
oklch(77.1% 0.14 337.6)
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 #5BCF91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Emerald #06D6A0 ΔE 0.032
- Medium Aquamarine #66CDAA ΔE 0.039
- Soft Green #6FC276 ΔE 0.040
- Seaweed #18D17B ΔE 0.046
- Greenblue #23C48B ΔE 0.046
- Aqua Green #12E193 ΔE 0.054
- Dark Mint #48C072 ΔE 0.055
- Seafoam Blue #78D1B6 ΔE 0.059
Use #5BCF91 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.