#166F6A
Closest named color: Dark Aquamarine (#017371). oklch(49.1% 0.079 189.1), rgb(22, 111, 106).
Aa
White text reads best on this color (5.97:1).
About this color
#166F6A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.079 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aquamarine (#017371), ΔE 0.014 away. White text reads best on it, at 5.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dark Aquamarine (#017371) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #166F6A |
| RGB | rgb(22, 111, 106) |
| HSL | hsl(177, 67%, 26%) |
| OKLCH | oklch(49.1% 0.079 189.1) |
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 #166F6A | 5.97:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #166F6A | 3.51:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #166F6A text on white | 5.97:1 | AA | Lc 79.5 | Fine for body text |
| #166F6A text on black | 3.51:1 | AA large text | Lc -22.3 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEB
oklch(93.5% 0.011 189.8)
-
Step 200
200
#CADEDC
oklch(88.5% 0.022 189.5)
-
Step 300
300
#A5C9C6
oklch(80.9% 0.039 190.2)
-
Step 400
400
#73ADA8
oklch(70.6% 0.061 189)
-
Step 500
500
#4A9993
oklch(63.1% 0.078 188.8)
-
Step 600
600
#26837D
oklch(55.6% 0.085 188.7)
-
Step 700
700 (this color)
#166F6A
oklch(49.1% 0.079 189.1)
-
Step 800
800
#175A56
oklch(42.6% 0.065 189.2)
-
Step 900
900
#1B4A47
oklch(37.6% 0.051 189.5)
-
Step 950
950
#122C2A
oklch(27.2% 0.032 188.9)
#166F6A 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) | #68696A | 0.083 |
| Deuteranopia (no green cones) | #5C606B | 0.078 |
| Tritanopia (no blue cones) | #00726D | 0.010 |
| Achromatopsia (no color) | #636363 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166F6A
#166F6A
oklch(49.1% 0.079 189.1)
- #874D57
#874D57
oklch(49.1% 0.079 9.3)
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 #166F6A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aquamarine #017371 ΔE 0.014
- Deep Turquoise #017374 ΔE 0.017
- Dark Aqua #05696B ΔE 0.022
- Bluegreen #017A79 ΔE 0.035
- Deep Aqua #08787F ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.041
- Petrol #005F6A ΔE 0.054
- Teal #008080 ΔE 0.054
Use #166F6A 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.