#189A99
Closest named color: Sea (#3C9992). oklch(62.3% 0.102 194), rgb(24, 154, 153).
Aa
Black text reads best on this color (6.12:1).
About this color
#189A99 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.102 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.018 away. Black text reads best on it, at 6.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.12:1 |
| White text | 3.43:1 |
Values
| HEX | #189A99 |
| RGB | rgb(24, 154, 153) |
| HSL | hsl(180, 73%, 35%) |
| OKLCH | oklch(62.3% 0.102 194) |
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 #189A99 | 3.43:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #189A99 | 6.12:1 | AA | Lc 42.7 | Non-text elements, placeholder text |
| #189A99 text on white | 3.43:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #189A99 text on black | 6.12:1 | AA | Lc -40.3 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#DFEDED
oklch(93.6% 0.015 196.9)
-
Step 200
200
#C5DFDE
oklch(88.4% 0.028 193.8)
-
Step 300
300
#9BCBCA
oklch(80.8% 0.05 194.6)
-
Step 400
400
#5FB1AF
oklch(70.8% 0.08 193.4)
-
Step 500
500 (this color)
#189A99
oklch(62.3% 0.102 194)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#052D2C
oklch(27% 0.043 192.4)
#189A99 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) | #8F9299 | 0.106 |
| Deuteranopia (no green cones) | #7E859A | 0.100 |
| Tritanopia (no blue cones) | #009F99 | 0.015 |
| Achromatopsia (no color) | #8A8A8A | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #189A99
#189A99
oklch(62.3% 0.102 194)
- #BC6C74
#BC6C74
oklch(62.2% 0.102 14.1)
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 #189A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.018
- Blue Green #0F9B8E ΔE 0.019
- Persian Green #2A9D8F ΔE 0.021
- Teal Green #0A9396 ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.040
- Dark Cyan #008B8B ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.050
Use #189A99 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.