#138573
Closest named color: Teal (#008080). oklch(55.4% 0.098 178.3), rgb(19, 133, 115).
Aa
Black text reads best on this color (4.63:1).
About this color
#138573 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 55%, its chroma 0.098 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.030 away. Black text reads best on it, at 4.63:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.63:1 |
| White text | 4.53:1 |
Values
| HEX | #138573 |
| RGB | rgb(19, 133, 115) |
| HSL | hsl(171, 75%, 30%) |
| OKLCH | oklch(55.4% 0.098 178.3) |
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 #138573 | 4.53:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #138573 | 4.63:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #138573 text on white | 4.53:1 | AA | Lc 71.0 | Content text, not long reading |
| #138573 text on black | 4.63:1 | AA | Lc -30.6 | 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
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDEA
oklch(93.6% 0.013 179.5)
-
Step 200
200
#C9DFD9
oklch(88.6% 0.025 177.6)
-
Step 300
300
#A3CAC1
oklch(80.8% 0.043 179.5)
-
Step 400
400
#6EAFA1
oklch(70.6% 0.07 179)
-
Step 500
500
#429B8A
oklch(63.1% 0.089 178.7)
-
Step 600
600 (this color)
#138573
oklch(55.4% 0.098 178.3)
-
Step 700
700
#007161
oklch(49.1% 0.09 178.4)
-
Step 800
800
#0A5C4F
oklch(42.6% 0.075 178.3)
-
Step 900
900
#164C42
oklch(37.8% 0.059 178.3)
-
Step 950
950
#0F2C26
oklch(26.9% 0.037 177.8)
#138573 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) | #7F7C72 | 0.103 |
| Deuteranopia (no green cones) | #717274 | 0.097 |
| Tritanopia (no blue cones) | #008780 | 0.019 |
| Achromatopsia (no color) | #767676 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #138573
#138573
oklch(55.4% 0.098 178.3)
- #A05972
#A05972
oklch(55.4% 0.098 358.3)
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 #138573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.030
- Dark Cyan #008B8B ΔE 0.036
- Bluegreen #017A79 ΔE 0.040
- Viridian #1E9167 ΔE 0.047
- Sea Green #2E8B57 ΔE 0.051
- Deep Aqua #08787F ΔE 0.051
- Dark Aquamarine #017371 ΔE 0.058
- Dusty Teal #4C9085 ΔE 0.058
Use #138573 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.