#137378
Closest named color: Deep Turquoise (#017374). oklch(50.7% 0.082 200.5), rgb(19, 115, 120).
Aa
White text reads best on this color (5.59:1).
About this color
#137378 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.082 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.009 away. White text reads best on it, at 5.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #137378 |
| RGB | rgb(19, 115, 120) |
| HSL | hsl(183, 73%, 27%) |
| OKLCH | oklch(50.7% 0.082 200.5) |
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 #137378 | 5.59:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #137378 | 3.75:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #137378 text on white | 5.59:1 | AA | Lc 77.6 | Fine for body text |
| #137378 text on black | 3.75:1 | AA large text | Lc -24.2 | 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
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEDF
oklch(88.5% 0.022 200.2)
-
Step 300
300
#A4C9CB
oklch(81% 0.039 200.5)
-
Step 400
400
#70ADB0
oklch(70.7% 0.063 199.8)
-
Step 500
500
#45989D
oklch(63.1% 0.08 200.7)
-
Step 600
600
#1C8288
oklch(55.5% 0.088 201)
-
Step 700
700 (this color)
#137378
oklch(50.7% 0.082 200.5)
-
Step 800
800
#105A5E
oklch(42.8% 0.068 200.6)
-
Step 900
900
#184A4D
oklch(37.7% 0.053 200.8)
-
Step 950
950
#102B2D
oklch(26.9% 0.033 201.9)
#137378 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) | #6A6D78 | 0.083 |
| Deuteranopia (no green cones) | #5C6378 | 0.077 |
| Tritanopia (no blue cones) | #007874 | 0.019 |
| Achromatopsia (no color) | #686868 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #137378
#137378
oklch(50.7% 0.082 200.5)
- #8E5151
#8E5151
oklch(50.6% 0.082 20.3)
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 #137378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.009
- Dark Aquamarine #017371 ΔE 0.013
- Deep Aqua #08787F ΔE 0.016
- Bluegreen #017A79 ΔE 0.021
- Dark Aqua #05696B ΔE 0.035
- Teal #008080 ΔE 0.039
- Ocean #017B92 ΔE 0.042
- Sea Blue #047495 ΔE 0.046
Use #137378 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.