#37686E
Closest named color: Dark Aqua (#05696B). oklch(48.5% 0.054 205.8), rgb(55, 104, 110).
Aa
White text reads best on this color (6.23:1).
About this color
#37686E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 49%, its chroma 0.054 and its hue 206°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.030 away. White text reads best on it, at 6.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.36:1 |
| White text | 6.23:1 |
Values
| HEX | #37686E |
| RGB | rgb(55, 104, 110) |
| HSL | hsl(187, 33%, 32%) |
| OKLCH | oklch(48.5% 0.054 205.8) |
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 #37686E | 6.23:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #37686E | 3.36:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #37686E text on white | 6.23:1 | AA | Lc 81.0 | Fine for body text |
| #37686E text on black | 3.36:1 | AA large text | Lc -20.9 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4EBEC
oklch(93.5% 0.008 207.1)
-
Step 200
200
#CFDCDE
oklch(88.5% 0.014 207.9)
-
Step 300
300
#AEC6C9
oklch(80.9% 0.026 205.8)
-
Step 400
400
#83A8AD
oklch(70.6% 0.041 206.5)
-
Step 500
500
#629399
oklch(63.1% 0.053 205.6)
-
Step 600
600
#487D84
oklch(55.6% 0.057 206.5)
-
Step 700
700 (this color)
#37686E
oklch(48.5% 0.054 205.8)
-
Step 800
800
#2F565B
oklch(42.6% 0.045 206.2)
-
Step 900
900
#2B474B
oklch(37.7% 0.034 207.2)
-
Step 950
950
#192A2C
oklch(27.1% 0.023 205.2)
#37686E 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) | #61646E | 0.053 |
| Deuteranopia (no green cones) | #585E6E | 0.048 |
| Tritanopia (no blue cones) | #196C6A | 0.026 |
| Achromatopsia (no color) | #616161 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37686E
#37686E
oklch(48.5% 0.054 205.8)
- #7B534F
#7B534F
oklch(48.5% 0.054 25.6)
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 #37686E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.030
- Slate #516572 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.038
- Dark Aquamarine #017371 ΔE 0.039
- Dark Green Blue #1F6357 ΔE 0.046
- Petrol #005F6A ΔE 0.047
- Deep Aqua #08787F ΔE 0.050
- YInMn Blue #415A77 ΔE 0.051
Use #37686E 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.