#11BB99
Closest named color: Greeny Blue (#42B395). oklch(70.7% 0.133 173.2), rgb(17, 187, 153).
Aa
Black text reads best on this color (8.59:1).
About this color
#11BB99 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.133 and its hue 173°. Its hue sits on the cool side of the wheel. The nearest named color is Greeny Blue (#42B395), ΔE 0.025 away. Black text reads best on it, at 8.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.133) |
| Temperature | cool |
| Nearest name | Greeny Blue (#42B395) |
| Black text | 8.59:1 |
| White text | 2.44:1 |
Values
| HEX | #11BB99 |
| RGB | rgb(17, 187, 153) |
| HSL | hsl(168, 83%, 40%) |
| OKLCH | oklch(70.7% 0.133 173.2) |
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 #11BB99 | 2.44:1 | Fails | Lc -52.5 | Large or bold text, headings |
| Black text on #11BB99 | 8.59:1 | AAA | Lc 56.5 | Large or bold text, headings |
| #11BB99 text on white | 2.44:1 | Fails | Lc 47.5 | Large or bold text, headings |
| #11BB99 text on black | 8.59:1 | AAA | Lc -54.5 | 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
#EEF8F5
oklch(97.1% 0.011 176.3)
-
Step 100
100
#DAEFE8
oklch(93.5% 0.024 173.8)
-
Step 200
200
#BBE4D6
oklch(88.6% 0.047 172.5)
-
Step 300
300
#86D3BC
oklch(81% 0.084 173.2)
-
Step 400
400 (this color)
#11BB99
oklch(70.7% 0.133 173.2)
-
Step 500
500
#00A183
oklch(63.2% 0.121 173.2)
-
Step 600
600
#00876E
oklch(55.6% 0.106 173.6)
-
Step 700
700
#00725C
oklch(49.2% 0.094 173.1)
-
Step 800
800
#005D4B
oklch(42.7% 0.081 173.5)
-
Step 900
900
#004E3E
oklch(37.8% 0.073 172.9)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#11BB99 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) | #B4AE97 | 0.137 |
| Deuteranopia (no green cones) | #A1A09B | 0.132 |
| Tritanopia (no blue cones) | #00BDB1 | 0.034 |
| Achromatopsia (no color) | #A6A6A6 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #11BB99
#11BB99
oklch(70.7% 0.133 173.2)
- #DF7BA8
#DF7BA8
oklch(70.6% 0.134 352.7)
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 #11BB99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greeny Blue #42B395 ΔE 0.025
- Green Blue #01C08D ΔE 0.026
- Topaz #13BBAF ΔE 0.032
- Greenblue #23C48B ΔE 0.038
- Dark Seafoam #1FB57A ΔE 0.041
- Light Sea Green #20B2AA ΔE 0.042
- Bluey Green #2BB179 ΔE 0.044
- Green Teal #0CB577 ΔE 0.046
Use #11BB99 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.