#129EAF
Closest named color: Sea (#3C9992). oklch(64.1% 0.108 208.6), rgb(18, 158, 175).
Aa
Black text reads best on this color (6.53:1).
About this color
#129EAF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.108 and its hue 209°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.042 away. Black text reads best on it, at 6.53:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.53:1 |
| White text | 3.21:1 |
Values
| HEX | #129EAF |
| RGB | rgb(18, 158, 175) |
| HSL | hsl(186, 81%, 38%) |
| OKLCH | oklch(64.1% 0.108 208.6) |
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 #129EAF | 3.21:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #129EAF | 6.53:1 | AA | Lc 45.2 | Large or bold text, headings |
| #129EAF text on white | 3.21:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #129EAF text on black | 6.53:1 | AA | Lc -42.9 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C4DFE3
oklch(88.5% 0.029 207.4)
-
Step 300
300
#99CBD3
oklch(81% 0.053 208.3)
-
Step 400
400
#5AAFBC
oklch(70.6% 0.084 208.5)
-
Step 500
500 (this color)
#129EAF
oklch(64.1% 0.108 208.6)
-
Step 600
600
#008291
oklch(55.5% 0.096 208.9)
-
Step 700
700
#006E7A
oklch(49.2% 0.085 207.9)
-
Step 800
800
#005A64
oklch(42.8% 0.073 207.9)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#032C32
oklch(26.9% 0.044 209.6)
#129EAF 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) | #8F98B0 | 0.103 |
| Deuteranopia (no green cones) | #7B89AF | 0.094 |
| Tritanopia (no blue cones) | #00A6A3 | 0.034 |
| Achromatopsia (no color) | #8F8F8F | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #129EAF
#129EAF
oklch(64.1% 0.108 208.6)
- #C57267
#C57267
oklch(64.1% 0.107 28.4)
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 #129EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.042
- Teal Green #0A9396 ΔE 0.044
- Persian Green #2A9D8F ΔE 0.048
- Cadet Blue #5F9EA0 ΔE 0.048
- Blue Green #0F9B8E ΔE 0.049
- Turquoise Blue #06B1C4 ΔE 0.056
- Blue NCS #118AB2 ΔE 0.061
- Dull Teal #5F9E8F ΔE 0.062
Use #129EAF 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.