#166373
Closest named color: Petrol (#005F6A). oklch(46.3% 0.075 215.4), rgb(22, 99, 115).
Aa
White text reads best on this color (6.84:1).
About this color
#166373 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.075 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.021 away. White text reads best on it, at 6.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.06:1 |
| White text | 6.84:1 |
Values
| HEX | #166373 |
| RGB | rgb(22, 99, 115) |
| HSL | hsl(190, 68%, 27%) |
| OKLCH | oklch(46.3% 0.075 215.4) |
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 #166373 | 6.84:1 | AA | Lc -88.3 | Fine for body text |
| Black text on #166373 | 3.06:1 | AA large text | Lc 20.7 | Dividers and decoration only |
| #166373 text on white | 6.84:1 | AA | Lc 83.3 | Fine for body text |
| #166373 text on black | 3.06:1 | AA large text | Lc -18.6 | 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
#CBDDE1
oklch(88.5% 0.02 212.6)
-
Step 300
300
#A7C7CF
oklch(80.9% 0.036 214.5)
-
Step 400
400
#76AAB7
oklch(70.6% 0.058 215)
-
Step 500
500
#5095A6
oklch(63.1% 0.074 215.7)
-
Step 600
600
#307F91
oklch(55.6% 0.08 215.6)
-
Step 700
700 (this color)
#166373
oklch(46.3% 0.075 215.4)
-
Step 800
800
#1E5764
oklch(42.6% 0.062 215.6)
-
Step 900
900
#1F4852
oklch(37.7% 0.049 216)
-
Step 950
950
#132A30
oklch(26.9% 0.031 216.7)
#166373 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) | #586074 | 0.066 |
| Deuteranopia (no green cones) | #4B5773 | 0.058 |
| Tritanopia (no blue cones) | #006968 | 0.031 |
| Achromatopsia (no color) | #5A5A5A | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166373
#166373
oklch(46.3% 0.075 215.4)
- #7D493B
#7D493B
oklch(46.3% 0.075 35.9)
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 #166373, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.021
- Dark Aqua #05696B ΔE 0.027
- YInMn Blue #415A77 ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.046
- Deep Turquoise #017374 ΔE 0.050
- Dark Aquamarine #017371 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim #3B638C ΔE 0.054
Use #166373 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.