#129D9C
Closest named color: Persian Green (#2A9D8F). oklch(63.1% 0.105 194), rgb(18, 157, 156).
Aa
Black text reads best on this color (6.32:1).
About this color
#129D9C is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.105 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Persian Green (#2A9D8F), ΔE 0.020 away. Black text reads best on it, at 6.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Persian Green (#2A9D8F) |
| Black text | 6.32:1 |
| White text | 3.31:1 |
Values
| HEX | #129D9C |
| RGB | rgb(18, 157, 156) |
| HSL | hsl(180, 79%, 34%) |
| OKLCH | oklch(63.1% 0.105 194) |
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 #129D9C | 3.31:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #129D9C | 6.32:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #129D9C text on white | 3.31:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #129D9C text on black | 6.32:1 | AA | Lc -41.7 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDED
oklch(93.6% 0.015 196.9)
-
Step 200
200
#C5DFDE
oklch(88.4% 0.028 193.8)
-
Step 300
300
#9ACCCA
oklch(81% 0.052 193.1)
-
Step 400
400
#5CB1AF
oklch(70.7% 0.083 193.4)
-
Step 500
500 (this color)
#129D9C
oklch(63.1% 0.105 194)
-
Step 600
600
#008484
oklch(55.5% 0.095 194.8)
-
Step 700
700
#006F6F
oklch(49% 0.084 194.8)
-
Step 800
800
#005B5B
oklch(42.7% 0.073 194.8)
-
Step 900
900
#004C4C
oklch(37.7% 0.064 194.8)
-
Step 950
950
#042D2D
oklch(27.1% 0.043 194.9)
#129D9C 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) | #92959C | 0.109 |
| Deuteranopia (no green cones) | #80879D | 0.103 |
| Tritanopia (no blue cones) | #00A29C | 0.015 |
| Achromatopsia (no color) | #8D8D8D | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129D9C
#129D9C
oklch(63.1% 0.105 194)
- #C06E76
#C06E76
oklch(63.1% 0.104 14.2)
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 #129D9C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Persian Green #2A9D8F ΔE 0.020
- Sea #3C9992 ΔE 0.021
- Blue Green #0F9B8E ΔE 0.021
- Teal Green #0A9396 ΔE 0.030
- Dusty Teal #4C9085 ΔE 0.046
- Grey Teal #5E9B8A ΔE 0.048
- Cadet Blue #5F9EA0 ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.048
Use #129D9C 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.