#16636A
Closest named color: Petrol (#005F6A). oklch(45.9% 0.071 204.2), rgb(22, 99, 106).
Aa
White text reads best on this color (6.93:1).
About this color
#16636A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.016 away. White text reads best on it, at 6.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #16636A |
| RGB | rgb(22, 99, 106) |
| HSL | hsl(185, 66%, 25%) |
| OKLCH | oklch(45.9% 0.071 204.2) |
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 #16636A | 6.93:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #16636A | 3.02:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #16636A text on white | 6.93:1 | AA | Lc 83.7 | Fine for body text |
| #16636A text on black | 3.02:1 | AA large text | Lc -18.3 | 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 800.
-
Step 50
50
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E1ECED
oklch(93.5% 0.012 203.5)
-
Step 200
200
#C8DEE0
oklch(88.5% 0.024 203.4)
-
Step 300
300
#A2C9CD
oklch(80.9% 0.042 204.1)
-
Step 400
400
#6DADB4
oklch(70.7% 0.066 204.6)
-
Step 500
500
#3F98A1
oklch(63% 0.085 204.4)
-
Step 600
600
#0C838C
oklch(55.7% 0.093 203.5)
-
Step 700
700
#006E77
oklch(49.1% 0.084 204.7)
-
Step 800
800 (this color)
#16636A
oklch(45.9% 0.071 204.2)
-
Step 900
900
#144A4F
oklch(37.7% 0.055 204)
-
Step 950
950
#0E2B2E
oklch(26.9% 0.035 204.5)
#16636A 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) | #5A5F6B | 0.070 |
| Deuteranopia (no green cones) | #4F566A | 0.065 |
| Tritanopia (no blue cones) | #006765 | 0.018 |
| Achromatopsia (no color) | #5A5A5A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16636A
#16636A
oklch(45.9% 0.071 204.2)
- #7B4744
#7B4744
oklch(45.9% 0.072 23.8)
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 #16636A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.016
- Dark Aqua #05696B ΔE 0.019
- Dark Green Blue #1F6357 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.048
- Dark Aquamarine #017371 ΔE 0.049
- Deep Teal #00555A ΔE 0.050
- YInMn Blue #415A77 ΔE 0.054
- Slate #516572 ΔE 0.060
Use #16636A 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.