#009188
Closest named color: Dark Cyan (#008B8B). oklch(59.1% 0.103 187.1), rgb(0, 145, 136).
Aa
Black text reads best on this color (5.40:1).
About this color
#009188 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.103 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.021 away. Black text reads best on it, at 5.40:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.40:1 |
| White text | 3.88:1 |
Values
| HEX | #009188 |
| RGB | rgb(0, 145, 136) |
| HSL | hsl(176, 100%, 28%) |
| OKLCH | oklch(59.1% 0.103 187.1) |
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 #009188 | 3.88:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #009188 | 5.40:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #009188 text on white | 3.88:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #009188 text on black | 5.40:1 | AA | Lc -36.0 | 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
#E0EDEB
oklch(93.6% 0.014 185.9)
-
Step 200
200
#C7DFDC
oklch(88.5% 0.026 187.6)
-
Step 300
300
#9FCBC6
oklch(80.9% 0.047 187.7)
-
Step 400
400
#67B0A8
oklch(70.7% 0.074 186.7)
-
Step 500
500
#339C93
oklch(63.1% 0.095 186.9)
-
Step 600
600 (this color)
#009188
oklch(59.1% 0.103 187.1)
-
Step 700
700
#007069
oklch(49.1% 0.086 187.3)
-
Step 800
800
#005C56
oklch(42.8% 0.075 187.1)
-
Step 900
900
#0A4C47
oklch(37.7% 0.062 187)
-
Step 950
950
#0A2D2A
oklch(27.1% 0.04 187.1)
#009188 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) | #888888 | 0.109 |
| Deuteranopia (no green cones) | #787C89 | 0.104 |
| Tritanopia (no blue cones) | #00958E | 0.013 |
| Achromatopsia (no color) | #818181 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #009188
#009188
oklch(59.1% 0.103 187.1)
- #B16273
#B16273
oklch(59.1% 0.103 6.9)
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 #009188, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.021
- Teal Green #0A9396 ΔE 0.021
- Blue Green #0F9B8E ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.035
- Sea #3C9992 ΔE 0.038
- Persian Green #2A9D8F ΔE 0.040
- Viridian #1E9167 ΔE 0.049
- Ocean Green #3D9973 ΔE 0.051
Use #009188 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.