#137B66
Closest named color: Bluegreen (#017A79). oklch(52.3% 0.094 174.5), rgb(19, 123, 102).
Aa
White text reads best on this color (5.18:1).
About this color
#137B66 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.094 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.031 away. White text reads best on it, at 5.18:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.05:1 |
| White text | 5.18:1 |
Values
| HEX | #137B66 |
| RGB | rgb(19, 123, 102) |
| HSL | hsl(168, 73%, 28%) |
| OKLCH | oklch(52.3% 0.094 174.5) |
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 #137B66 | 5.18:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #137B66 | 4.05:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #137B66 text on white | 5.18:1 | AA | Lc 75.2 | Fine for body text |
| #137B66 text on black | 4.05:1 | AA large text | Lc -26.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F7F5
oklch(97.1% 0.007 174.4)
-
Step 100
100
#E1EDE9
oklch(93.6% 0.014 174.2)
-
Step 200
200
#C9DFD8
oklch(88.5% 0.025 174.7)
-
Step 300
300
#A3CBBF
oklch(81% 0.046 174.9)
-
Step 400
400
#6EB09D
oklch(70.7% 0.073 173.9)
-
Step 500
500
#419C86
oklch(63.2% 0.093 174.7)
-
Step 600
600
#12866F
oklch(55.5% 0.101 174.4)
-
Step 700
700 (this color)
#137B66
oklch(52.3% 0.094 174.5)
-
Step 800
800
#095D4C
oklch(42.8% 0.078 174)
-
Step 900
900
#154C3F
oklch(37.7% 0.061 174)
-
Step 950
950
#0F2D25
oklch(27.1% 0.039 173.2)
#137B66 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) | #767265 | 0.098 |
| Deuteranopia (no green cones) | #696968 | 0.094 |
| Tritanopia (no blue cones) | #007D75 | 0.022 |
| Achromatopsia (no color) | #6D6D6D | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #137B66
#137B66
oklch(52.3% 0.094 174.5)
- #93516D
#93516D
oklch(52.1% 0.094 354)
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 #137B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.031
- Dark Aquamarine #017371 ΔE 0.036
- Teal #008080 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.039
- Deep Aqua #08787F ΔE 0.044
- Jungle Green #048243 ΔE 0.061
- Dark Aqua #05696B ΔE 0.062
- Sea Green #2E8B57 ΔE 0.063
Use #137B66 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.