#138E8F
Closest named color: Dark Cyan (#008B8B). oklch(58.8% 0.097 195.7), rgb(19, 142, 143).
Aa
Black text reads best on this color (5.29:1).
About this color
#138E8F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 59%, its chroma 0.097 and its hue 196°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Cyan (#008B8B), ΔE 0.011 away. Black text reads best on it, at 5.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Dark Cyan (#008B8B) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #138E8F |
| RGB | rgb(19, 142, 143) |
| HSL | hsl(180, 77%, 32%) |
| OKLCH | oklch(58.8% 0.097 195.7) |
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 #138E8F | 3.96:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #138E8F | 5.29:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #138E8F text on white | 3.96:1 | AA large text | Lc 66.5 | Content text, not long reading |
| #138E8F text on black | 5.29:1 | AA | Lc -35.1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C8DEDE
oklch(88.4% 0.023 196.7)
-
Step 300
300
#A1CACA
oklch(81% 0.043 196.3)
-
Step 400
400
#6AAEAF
oklch(70.6% 0.069 196.9)
-
Step 500
500
#399A9B
oklch(63.1% 0.089 196.1)
-
Step 600
600 (this color)
#138E8F
oklch(58.8% 0.097 195.7)
-
Step 700
700
#006F70
oklch(49.1% 0.084 195.9)
-
Step 800
800
#005B5C
oklch(42.7% 0.073 196.1)
-
Step 900
900
#0F4B4B
oklch(37.7% 0.058 195)
-
Step 950
950
#0C2C2C
oklch(27% 0.037 195.2)
#138E8F 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) | #84878F | 0.101 |
| Deuteranopia (no green cones) | #737B90 | 0.093 |
| Tritanopia (no blue cones) | #00938E | 0.016 |
| Achromatopsia (no color) | #808080 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #138E8F
#138E8F
oklch(58.8% 0.097 195.7)
- #AE6469
#AE6469
oklch(58.8% 0.096 16.1)
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 #138E8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Cyan #008B8B ΔE 0.011
- Teal Green #0A9396 ΔE 0.016
- Teal Blue #01889F ΔE 0.036
- Dusty Teal #4C9085 ΔE 0.037
- Blue Green #0F9B8E ΔE 0.040
- Sea #3C9992 ΔE 0.041
- Teal #008080 ΔE 0.045
- Persian Green #2A9D8F ΔE 0.048
Use #138E8F 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.