#166361
Closest named color: Dark Green Blue (#1F6357). oklch(45.5% 0.071 192.3), rgb(22, 99, 97).
Aa
White text reads best on this color (7.01:1).
About this color
#166361 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.016 away. White text reads best on it, at 7.01:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #166361 |
| RGB | rgb(22, 99, 97) |
| HSL | hsl(178, 64%, 24%) |
| OKLCH | oklch(45.5% 0.071 192.3) |
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 #166361 | 7.01:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #166361 | 2.99:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #166361 text on white | 7.01:1 | AAA | Lc 84.0 | Fine for body text |
| #166361 text on black | 2.99:1 | Fails | Lc -18.0 | 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 800.
-
Step 50
50
#F1F7F6
oklch(97.1% 0.006 185.3)
-
Step 100
100
#E1EDEC
oklch(93.7% 0.013 190.9)
-
Step 200
200
#C9DEDD
oklch(88.5% 0.022 193.3)
-
Step 300
300
#A3CAC8
oklch(81% 0.041 192.5)
-
Step 400
400
#6DAEAB
oklch(70.6% 0.067 192)
-
Step 500
500
#409A97
oklch(63.2% 0.085 192.2)
-
Step 600
600
#108481
oklch(55.6% 0.092 191.9)
-
Step 700
700
#006F6D
oklch(49% 0.084 192.6)
-
Step 800
800 (this color)
#166361
oklch(45.5% 0.071 192.3)
-
Step 900
900
#154B49
oklch(37.8% 0.055 191.5)
-
Step 950
950
#0E2C2B
oklch(27% 0.036 192.3)
#166361 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) | #5C5E61 | 0.074 |
| Deuteranopia (no green cones) | #515562 | 0.071 |
| Tritanopia (no blue cones) | #006662 | 0.010 |
| Achromatopsia (no color) | #595959 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #166361
#166361
oklch(45.5% 0.071 192.3)
- #79454C
#79454C
oklch(45.4% 0.072 11.7)
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 #166361, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.016
- Dark Aqua #05696B ΔE 0.021
- Petrol #005F6A ΔE 0.024
- Deep Teal #00555A ΔE 0.047
- Dark Aquamarine #017371 ΔE 0.050
- Deep Turquoise #017374 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.062
- Dark Blue Green #005249 ΔE 0.063
Use #166361 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.