#1BB9AC
Closest named color: Topaz (#13BBAF). oklch(70.9% 0.12 185.8), rgb(27, 185, 172).
Aa
Black text reads best on this color (8.58:1).
About this color
#1BB9AC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.120 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Topaz (#13BBAF), ΔE 0.006 away. Black text reads best on it, at 8.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Topaz (#13BBAF) |
| Black text | 8.58:1 |
| White text | 2.44:1 |
Values
| HEX | #1BB9AC |
| RGB | rgb(27, 185, 172) |
| HSL | hsl(175, 75%, 42%) |
| OKLCH | oklch(70.9% 0.12 185.8) |
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 #1BB9AC | 2.44:1 | Fails | Lc -52.6 | Large or bold text, headings |
| Black text on #1BB9AC | 8.58:1 | AAA | Lc 56.4 | Large or bold text, headings |
| #1BB9AC text on white | 2.44:1 | Fails | Lc 47.6 | Large or bold text, headings |
| #1BB9AC text on black | 8.58:1 | AAA | Lc -54.4 | 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
#EEF8F6
oklch(97.1% 0.011 182.9)
-
Step 100
100
#DBEFEC
oklch(93.7% 0.021 186)
-
Step 200
200
#BBE3DD
oklch(88.6% 0.042 185.3)
-
Step 300
300
#87D1C8
oklch(81% 0.075 186.1)
-
Step 400
400 (this color)
#1BB9AC
oklch(70.9% 0.12 185.8)
-
Step 500
500
#009F93
oklch(63.2% 0.111 185.4)
-
Step 600
600
#00857C
oklch(55.5% 0.097 186.5)
-
Step 700
700
#007068
oklch(49.1% 0.086 186.2)
-
Step 800
800
#005C55
oklch(42.7% 0.075 185.9)
-
Step 900
900
#004D47
oklch(37.8% 0.066 185.9)
-
Step 950
950
#002E2A
oklch(27.1% 0.048 185.8)
#1BB9AC 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) | #AFAEAC | 0.128 |
| Deuteranopia (no green cones) | #9B9FAD | 0.121 |
| Tritanopia (no blue cones) | #00BDB5 | 0.014 |
| Achromatopsia (no color) | #A6A6A6 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1BB9AC
#1BB9AC
oklch(70.9% 0.12 185.8)
- #E08096
#E08096
oklch(71% 0.12 5.9)
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 #1BB9AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Topaz #13BBAF ΔE 0.006
- Light Sea Green #20B2AA ΔE 0.020
- Greeny Blue #42B395 ΔE 0.032
- Turquoise Blue #06B1C4 ΔE 0.049
- Green Blue #01C08D ΔE 0.055
- Greenblue #23C48B ΔE 0.065
- Dark Turquoise #00CED1 ΔE 0.068
- Bluey Green #2BB179 ΔE 0.069
Use #1BB9AC 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.