#5BCFAB
Closest named color: Medium Aquamarine (#66CDAA). oklch(77.8% 0.118 169.9), rgb(91, 207, 171).
Aa
Black text reads best on this color (10.95:1).
About this color
#5BCFAB is a medium-light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.118 and its hue 170°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Aquamarine (#66CDAA), ΔE 0.009 away. Black text reads best on it, at 10.95:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Medium Aquamarine (#66CDAA) |
| Black text | 10.95:1 |
| White text | 1.91:1 |
Values
| HEX | #5BCFAB |
| RGB | rgb(91, 207, 171) |
| HSL | hsl(161, 55%, 58%) |
| OKLCH | oklch(77.8% 0.118 169.9) |
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 #5BCFAB | 1.91:1 | Fails | Lc -40.6 | Non-text elements, placeholder text |
| Black text on #5BCFAB | 10.95:1 | AAA | Lc 67.5 | Content text, not long reading |
| #5BCFAB text on white | 1.91:1 | Fails | Lc 36.4 | Non-text elements, placeholder text |
| #5BCFAB text on black | 10.95:1 | AAA | Lc -66.1 | 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
#ECF9F4
oklch(97.1% 0.015 171.1)
-
Step 100
100
#D5F2E6
oklch(93.7% 0.034 168.8)
-
Step 200
200
#AEE8D2
oklch(88.5% 0.066 169.4)
-
Step 300
300 (this color)
#5BCFAB
oklch(77.8% 0.118 169.9)
-
Step 400
400
#00BC93
oklch(70.7% 0.14 169.9)
-
Step 500
500
#00A17E
oklch(63.1% 0.125 170.2)
-
Step 600
600
#008869
oklch(55.7% 0.111 169.5)
-
Step 700
700
#007258
oklch(49.1% 0.097 169.9)
-
Step 800
800
#005D48
oklch(42.6% 0.084 170.6)
-
Step 900
900
#004E3B
oklch(37.7% 0.075 169.6)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
#5BCFAB 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) | #CAC3A9 | 0.121 |
| Deuteranopia (no green cones) | #B9B6AD | 0.116 |
| Tritanopia (no blue cones) | #1BD0C5 | 0.041 |
| Achromatopsia (no color) | #BBBBBB | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BCFAB
#5BCFAB
oklch(77.8% 0.118 169.9)
- #F097C1
#F097C1
oklch(77.9% 0.118 350.4)
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 #5BCFAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Aquamarine #66CDAA ΔE 0.009
- Seafoam Blue #78D1B6 ΔE 0.031
- Pale Teal #82CBB2 ΔE 0.038
- Emerald #06D6A0 ΔE 0.042
- Medium Turquoise #48D1CC ΔE 0.045
- Turquoise #40E0D0 ΔE 0.057
- Dark Turquoise #00CED1 ΔE 0.059
- Greenblue #23C48B ΔE 0.061
Use #5BCFAB 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.