#5BBBB8
Closest named color: Topaz (#13BBAF). oklch(73.3% 0.091 192.6), rgb(91, 187, 184).
Aa
Black text reads best on this color (9.24:1).
About this color
#5BBBB8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.091 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.039 away. Black text reads best on it, at 9.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.24:1 |
| White text | 2.27:1 |
Values
| HEX | #5BBBB8 |
| RGB | rgb(91, 187, 184) |
| HSL | hsl(178, 41%, 55%) |
| OKLCH | oklch(73.3% 0.091 192.6) |
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 #5BBBB8 | 2.27:1 | Fails | Lc -49.4 | Large or bold text, headings |
| Black text on #5BBBB8 | 9.24:1 | AAA | Lc 59.4 | Large or bold text, headings |
| #5BBBB8 text on white | 2.27:1 | Fails | Lc 44.6 | Non-text elements, placeholder text |
| #5BBBB8 text on black | 9.24:1 | AAA | Lc -57.5 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DEEEED
oklch(93.7% 0.017 192.3)
-
Step 200
200
#C2E0DF
oklch(88.5% 0.032 194.1)
-
Step 300
300
#96CDCA
oklch(81% 0.057 191.9)
-
Step 400
400 (this color)
#5BBBB8
oklch(73.3% 0.091 192.6)
-
Step 500
500
#009E9B
oklch(63.2% 0.108 192.4)
-
Step 600
600
#008582
oklch(55.7% 0.096 192)
-
Step 700
700
#006F6D
oklch(49% 0.084 192.6)
-
Step 800
800
#005B5A
oklch(42.6% 0.073 193.5)
-
Step 900
900
#004C4B
oklch(37.7% 0.064 193.2)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#5BBBB8 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) | #B1B3B8 | 0.095 |
| Deuteranopia (no green cones) | #A1A7B9 | 0.089 |
| Tritanopia (no blue cones) | #15C0BA | 0.033 |
| Achromatopsia (no color) | #ACACAC | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BBBB8
#5BBBB8
oklch(73.3% 0.091 192.6)
- #DB9199
#DB9199
oklch(73.3% 0.09 12.4)
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 #5BBBB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.039
- Light Sea Green #20B2AA ΔE 0.049
- Turquoise Blue #06B1C4 ΔE 0.055
- Dark Turquoise #00CED1 ΔE 0.057
- Greeny Blue #42B395 ΔE 0.057
- Medium Turquoise #48D1CC ΔE 0.059
- Medium Aquamarine #66CDAA ΔE 0.063
- Pale Teal #82CBB2 ΔE 0.064
Use #5BBBB8 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.