#188D89
Closest named color: Dark Cyan (#008B8B). oklch(58.3% 0.095 191.2), rgb(24, 141, 137).
Aa
Black text reads best on this color (5.21:1).
About this color
#188D89 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.095 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.010 away. Black text reads best on it, at 5.21:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.21:1 |
| White text | 4.03:1 |
Values
| HEX | #188D89 |
| RGB | rgb(24, 141, 137) |
| HSL | hsl(178, 71%, 32%) |
| OKLCH | oklch(58.3% 0.095 191.2) |
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 #188D89 | 4.03:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #188D89 | 5.21:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #188D89 text on white | 4.03:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #188D89 text on black | 5.21:1 | AA | Lc -34.5 | 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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DEDD
oklch(88.4% 0.023 193.4)
-
Step 300
300
#A2CAC7
oklch(80.9% 0.043 190.7)
-
Step 400
400
#6BAFAB
oklch(70.8% 0.069 190.9)
-
Step 500
500
#3C9A96
oklch(63% 0.088 191.2)
-
Step 600
600 (this color)
#188D89
oklch(58.3% 0.095 191.2)
-
Step 700
700
#00706C
oklch(49.2% 0.085 190.4)
-
Step 800
800
#005B59
oklch(42.6% 0.073 192.2)
-
Step 900
900
#124B49
oklch(37.7% 0.057 191.6)
-
Step 950
950
#0D2C2B
oklch(27% 0.036 192.3)
#188D89 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) | #848589 | 0.101 |
| Deuteranopia (no green cones) | #747A8A | 0.094 |
| Tritanopia (no blue cones) | #00918C | 0.012 |
| Achromatopsia (no color) | #7F7F7F | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #188D89
#188D89
oklch(58.3% 0.095 191.2)
- #AC626D
#AC626D
oklch(58.3% 0.096 11)
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 #188D89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.010
- Teal Green #0A9396 ΔE 0.022
- Dusty Teal #4C9085 ΔE 0.035
- Teal #008080 ΔE 0.041
- Blue Green #0F9B8E ΔE 0.041
- Teal Blue #01889F ΔE 0.042
- Sea #3C9992 ΔE 0.044
- Persian Green #2A9D8F ΔE 0.049
Use #188D89 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.