#166E76
Closest named color: Deep Turquoise (#017374). oklch(49.3% 0.078 204.4), rgb(22, 110, 118).
Aa
White text reads best on this color (5.95:1).
About this color
#166E76 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 49%, its chroma 0.078 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.017 away. White text reads best on it, at 5.95:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.52:1 |
| White text | 5.95:1 |
Values
| HEX | #166E76 |
| RGB | rgb(22, 110, 118) |
| HSL | hsl(185, 69%, 27%) |
| OKLCH | oklch(49.3% 0.078 204.4) |
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 #166E76 | 5.95:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #166E76 | 3.52:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #166E76 text on white | 5.95:1 | AA | Lc 79.4 | Fine for body text |
| #166E76 text on black | 3.52:1 | AA large text | Lc -22.4 | 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
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CADDDF
oklch(88.4% 0.021 204.4)
-
Step 300
300
#A5C8CC
oklch(80.9% 0.038 205)
-
Step 400
400
#72ACB2
oklch(70.7% 0.061 204.1)
-
Step 500
500
#49979F
oklch(63% 0.077 204.3)
-
Step 600
600
#25818A
oklch(55.5% 0.084 204.6)
-
Step 700
700 (this color)
#166E76
oklch(49.3% 0.078 204.4)
-
Step 800
800
#16595F
oklch(42.7% 0.065 203.9)
-
Step 900
900
#1B494E
oklch(37.6% 0.05 205.1)
-
Step 950
950
#112B2E
oklch(27% 0.032 205.4)
#166E76 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) | #646977 | 0.077 |
| Deuteranopia (no green cones) | #575F76 | 0.072 |
| Tritanopia (no blue cones) | #007370 | 0.022 |
| Achromatopsia (no color) | #646464 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166E76
#166E76
oklch(49.3% 0.078 204.4)
- #884F4B
#884F4B
oklch(49.3% 0.078 24.6)
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 #166E76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.017
- Dark Aquamarine #017371 ΔE 0.020
- Dark Aqua #05696B ΔE 0.023
- Deep Aqua #08787F ΔE 0.030
- Bluegreen #017A79 ΔE 0.036
- Sea Blue #047495 ΔE 0.049
- Petrol #005F6A ΔE 0.050
- Ocean #017B92 ΔE 0.051
Use #166E76 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.