#128F82
Closest named color: Dark Cyan (#008B8B). oklch(58.5% 0.101 183.5), rgb(18, 143, 130).
Aa
Black text reads best on this color (5.27:1).
About this color
#128F82 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.101 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.022 away. Black text reads best on it, at 5.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.27:1 |
| White text | 3.97:1 |
Values
| HEX | #128F82 |
| RGB | rgb(18, 143, 130) |
| HSL | hsl(174, 78%, 32%) |
| OKLCH | oklch(58.5% 0.101 183.5) |
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 #128F82 | 3.97:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #128F82 | 5.27:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #128F82 text on white | 3.97:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #128F82 text on black | 5.27:1 | AA | Lc -35.0 | 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
#E1EDEB
oklch(93.7% 0.013 185.1)
-
Step 200
200
#C8DFDB
oklch(88.5% 0.025 184.2)
-
Step 300
300
#A1CBC3
oklch(81% 0.046 182.2)
-
Step 400
400
#6AB0A5
oklch(70.8% 0.073 183.1)
-
Step 500
500
#399C8F
oklch(63.2% 0.093 183.1)
-
Step 600
600 (this color)
#128F82
oklch(58.5% 0.101 183.5)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#0F4C45
oklch(37.7% 0.061 183.6)
-
Step 950
950
#0C2C28
oklch(26.8% 0.038 183.9)
#128F82 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) | #888682 | 0.108 |
| Deuteranopia (no green cones) | #787B83 | 0.101 |
| Tritanopia (no blue cones) | #00928B | 0.014 |
| Achromatopsia (no color) | #7F7F7F | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #128F82
#128F82
oklch(58.5% 0.101 183.5)
- #AD6176
#AD6176
oklch(58.5% 0.101 3)
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 #128F82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.022
- Teal Green #0A9396 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.035
- Blue Green #0F9B8E ΔE 0.036
- Viridian #1E9167 ΔE 0.043
- Sea #3C9992 ΔE 0.043
- Persian Green #2A9D8F ΔE 0.045
- Teal #008080 ΔE 0.047
Use #128F82 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.