#5BBBA4
Closest named color: Topaz (#13BBAF). oklch(72.7% 0.098 175.6), rgb(91, 187, 164).
Aa
Black text reads best on this color (9.08:1).
About this color
#5BBBA4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 73%, its chroma 0.098 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.035 away. Black text reads best on it, at 9.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 9.08:1 |
| White text | 2.31:1 |
Values
| HEX | #5BBBA4 |
| RGB | rgb(91, 187, 164) |
| HSL | hsl(166, 41%, 55%) |
| OKLCH | oklch(72.7% 0.098 175.6) |
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 #5BBBA4 | 2.31:1 | Fails | Lc -50.2 | Large or bold text, headings |
| Black text on #5BBBA4 | 9.08:1 | AAA | Lc 58.6 | Large or bold text, headings |
| #5BBBA4 text on white | 2.31:1 | Fails | Lc 45.4 | Large or bold text, headings |
| #5BBBA4 text on black | 9.08:1 | AAA | Lc -56.7 | 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
#F0F7F5
oklch(97% 0.008 177.3)
-
Step 100
100
#DEEEE9
oklch(93.6% 0.018 175.3)
-
Step 200
200
#C3E1D8
oklch(88.5% 0.034 175.5)
-
Step 300
300
#97CEBF
oklch(80.9% 0.061 176)
-
Step 400
400 (this color)
#5BBBA4
oklch(72.7% 0.098 175.6)
-
Step 500
500
#00A086
oklch(63% 0.118 175.6)
-
Step 600
600
#008770
oklch(55.7% 0.105 175.1)
-
Step 700
700
#00715E
oklch(49% 0.092 175.6)
-
Step 800
800
#005D4D
oklch(42.7% 0.08 175.6)
-
Step 900
900
#004E40
oklch(37.9% 0.071 175.3)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#5BBBA4 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) | #B5B1A3 | 0.102 |
| Deuteranopia (no green cones) | #A6A6A6 | 0.098 |
| Tritanopia (no blue cones) | #2EBDB4 | 0.030 |
| Achromatopsia (no color) | #AAAAAA | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BBBA4
#5BBBA4
oklch(72.7% 0.098 175.6)
- #D88DA9
#D88DA9
oklch(72.7% 0.097 355.8)
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 #5BBBA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.035
- Greeny Blue #42B395 ΔE 0.036
- Light Sea Green #20B2AA ΔE 0.047
- Medium Aquamarine #66CDAA ΔE 0.052
- Muted Teal #90B494 ΔE 0.053
- Dark Sea Green #8FBC8F ΔE 0.056
- Green Blue #01C08D ΔE 0.057
- Tea #65AB7C ΔE 0.059
Use #5BBBA4 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.