#166575
Closest named color: Dark Aqua (#05696B). oklch(46.9% 0.076 215), rgb(22, 101, 117).
Aa
White text reads best on this color (6.66:1).
About this color
#166575 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 47%, its chroma 0.076 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.025 away. White text reads best on it, at 6.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #166575 |
| RGB | rgb(22, 101, 117) |
| HSL | hsl(190, 68%, 27%) |
| OKLCH | oklch(46.9% 0.076 215) |
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 #166575 | 6.66:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #166575 | 3.15:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #166575 text on white | 6.66:1 | AA | Lc 82.6 | Fine for body text |
| #166575 text on black | 3.15:1 | AA large text | Lc -19.4 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#CBDDE2
oklch(88.6% 0.021 216.2)
-
Step 300
300
#A7C7CF
oklch(80.9% 0.036 214.5)
-
Step 400
400
#76AAB8
oklch(70.6% 0.058 216.4)
-
Step 500
500
#4F95A6
oklch(63.1% 0.075 215.5)
-
Step 600
600
#2E7F91
oklch(55.5% 0.081 215.3)
-
Step 700
700 (this color)
#166575
oklch(46.9% 0.076 215)
-
Step 800
800
#1D5864
oklch(42.8% 0.063 213.7)
-
Step 900
900
#1E4852
oklch(37.6% 0.049 215.6)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#166575 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) | #5A6276 | 0.068 |
| Deuteranopia (no green cones) | #4D5875 | 0.061 |
| Tritanopia (no blue cones) | #006B6A | 0.031 |
| Achromatopsia (no color) | #5C5C5C | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166575
#166575
oklch(46.9% 0.076 215)
- #7F4A3D
#7F4A3D
oklch(46.8% 0.076 34.6)
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 #166575, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.025
- Petrol #005F6A ΔE 0.026
- Deep Turquoise #017374 ΔE 0.045
- Dark Aquamarine #017371 ΔE 0.047
- YInMn Blue #415A77 ΔE 0.047
- Dark Green Blue #1F6357 ΔE 0.048
- Peacock Blue #016795 ΔE 0.051
- Denim #3B638C ΔE 0.052
Use #166575 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.