#129A9C
Closest named color: Sea (#3C9992). oklch(62.3% 0.103 196.5), rgb(18, 154, 156).
Aa
Black text reads best on this color (6.12:1).
About this color
#129A9C is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 62%, its chroma 0.103 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.021 away. Black text reads best on it, at 6.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.12:1 |
| White text | 3.42:1 |
Values
| HEX | #129A9C |
| RGB | rgb(18, 154, 156) |
| HSL | hsl(181, 79%, 34%) |
| OKLCH | oklch(62.3% 0.103 196.5) |
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 #129A9C | 3.42:1 | AA large text | Lc -66.7 | Content text, not long reading |
| Black text on #129A9C | 6.12:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #129A9C text on white | 3.42:1 | AA large text | Lc 61.3 | Content text, not long reading |
| #129A9C text on black | 6.12:1 | AA | Lc -40.4 | 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
#C5DFDF
oklch(88.5% 0.028 196.7)
-
Step 300
300
#9BCBCB
oklch(80.8% 0.05 196.2)
-
Step 400
400
#5EB0B1
oklch(70.6% 0.08 196.5)
-
Step 500
500 (this color)
#129A9C
oklch(62.3% 0.103 196.5)
-
Step 600
600
#008486
oklch(55.6% 0.095 196.7)
-
Step 700
700
#006F71
oklch(49.1% 0.084 197)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#004C4D
oklch(37.8% 0.064 196.3)
-
Step 950
950
#042D2D
oklch(27.1% 0.043 194.9)
#129A9C 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) | #8F929C | 0.107 |
| Deuteranopia (no green cones) | #7D859D | 0.100 |
| Tritanopia (no blue cones) | #00A09A | 0.019 |
| Achromatopsia (no color) | #8B8B8B | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129A9C
#129A9C
oklch(62.3% 0.103 196.5)
- #BD6C71
#BD6C71
oklch(62.3% 0.103 16.5)
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 #129A9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.021
- Teal Green #0A9396 ΔE 0.021
- Blue Green #0F9B8E ΔE 0.023
- Persian Green #2A9D8F ΔE 0.025
- Dusty Teal #4C9085 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.047
- Grey Teal #5E9B8A ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.051
Use #129A9C 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.