#4BB9B5
Closest named color: Topaz (#13BBAF). oklch(72.2% 0.1 191.8), rgb(75, 185, 181).
Aa
Black text reads best on this color (8.90:1).
About this color
#4BB9B5 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.100 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.026 away. Black text reads best on it, at 8.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.90:1 |
| White text | 2.35:1 |
Values
| HEX | #4BB9B5 |
| RGB | rgb(75, 185, 181) |
| HSL | hsl(178, 44%, 51%) |
| OKLCH | oklch(72.2% 0.1 191.8) |
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 #4BB9B5 | 2.35:1 | Fails | Lc -51.1 | Large or bold text, headings |
| Black text on #4BB9B5 | 8.90:1 | AAA | Lc 57.8 | Large or bold text, headings |
| #4BB9B5 text on white | 2.35:1 | Fails | Lc 46.2 | Large or bold text, headings |
| #4BB9B5 text on black | 8.90:1 | AAA | Lc -55.8 | 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
#EFF7F7
oklch(97% 0.008 197)
-
Step 100
100
#DDEEED
oklch(93.6% 0.018 192.6)
-
Step 200
200
#C0E1DF
oklch(88.5% 0.035 192)
-
Step 300
300
#91CECB
oklch(80.9% 0.062 192.1)
-
Step 400
400 (this color)
#4BB9B5
oklch(72.2% 0.1 191.8)
-
Step 500
500
#009E9A
oklch(63.2% 0.109 191.6)
-
Step 600
600
#008581
oklch(55.7% 0.096 191.1)
-
Step 700
700
#00706D
oklch(49.2% 0.085 191.5)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#004C4A
oklch(37.6% 0.065 191.7)
-
Step 950
950
#002D2C
oklch(26.9% 0.046 192.5)
#4BB9B5 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) | #AFB0B5 | 0.106 |
| Deuteranopia (no green cones) | #9DA3B6 | 0.099 |
| Tritanopia (no blue cones) | #00BEB7 | 0.026 |
| Achromatopsia (no color) | #A9A9A9 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4BB9B5
#4BB9B5
oklch(72.2% 0.1 191.8)
- #DC8B95
#DC8B95
oklch(72.3% 0.099 11.8)
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 #4BB9B5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.026
- Light Sea Green #20B2AA ΔE 0.035
- Turquoise Blue #06B1C4 ΔE 0.045
- Greeny Blue #42B395 ΔE 0.047
- Dark Turquoise #00CED1 ΔE 0.060
- Medium Turquoise #48D1CC ΔE 0.067
- Medium Aquamarine #66CDAA ΔE 0.070
- Muted Teal #90B494 ΔE 0.071
Use #4BB9B5 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.