#128D84
Closest named color: Dark Cyan (#008B8B). oklch(58.1% 0.098 186.8), rgb(18, 141, 132).
Aa
Black text reads best on this color (5.16:1).
About this color
#128D84 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.098 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.014 away. Black text reads best on it, at 5.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #128D84 |
| RGB | rgb(18, 141, 132) |
| HSL | hsl(176, 77%, 31%) |
| OKLCH | oklch(58.1% 0.098 186.8) |
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 #128D84 | 4.06:1 | AA large text | Lc -72.9 | Content text, not long reading |
| Black text on #128D84 | 5.16:1 | AA | Lc 36.7 | Non-text elements, placeholder text |
| #128D84 text on white | 4.06:1 | AA large text | Lc 67.4 | Content text, not long reading |
| #128D84 text on black | 5.16:1 | AA | Lc -34.3 | 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 600.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDC
oklch(88.6% 0.025 187.3)
-
Step 300
300
#A1CAC5
oklch(80.8% 0.044 187.2)
-
Step 400
400
#6BAFA8
oklch(70.7% 0.07 187.4)
-
Step 500
500
#3B9B92
oklch(63.1% 0.09 186.6)
-
Step 600
600 (this color)
#128D84
oklch(58.1% 0.098 186.8)
-
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
#104C47
oklch(37.8% 0.059 186.7)
-
Step 950
950
#0D2C29
oklch(26.9% 0.037 186.6)
#128D84 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) | #858584 | 0.104 |
| Deuteranopia (no green cones) | #757985 | 0.098 |
| Tritanopia (no blue cones) | #00918A | 0.013 |
| Achromatopsia (no color) | #7E7E7E | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #128D84
#128D84
oklch(58.1% 0.098 186.8)
- #AB6171
#AB6171
oklch(58.1% 0.097 6.7)
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 #128D84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.014
- Teal Green #0A9396 ΔE 0.028
- Dusty Teal #4C9085 ΔE 0.037
- Teal #008080 ΔE 0.040
- Blue Green #0F9B8E ΔE 0.041
- Sea #3C9992 ΔE 0.046
- Viridian #1E9167 ΔE 0.049
- Teal Blue #01889F ΔE 0.049
Use #128D84 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.