#16636B
Closest named color: Petrol (#005F6A). oklch(45.9% 0.071 205.5), rgb(22, 99, 107).
Aa
White text reads best on this color (6.92:1).
About this color
#16636B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 46%, its chroma 0.071 and its hue 205°. 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 6.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #16636B |
| RGB | rgb(22, 99, 107) |
| HSL | hsl(186, 66%, 25%) |
| OKLCH | oklch(45.9% 0.071 205.5) |
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 #16636B | 6.92:1 | AA | Lc -88.6 | Fine for body text |
| Black text on #16636B | 3.03:1 | AA large text | Lc 20.4 | Dividers and decoration only |
| #16636B text on white | 6.92:1 | AA | Lc 83.6 | Fine for body text |
| #16636B text on black | 3.03:1 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A8C7CB
oklch(80.8% 0.034 206)
-
Step 400
400
#77ABB1
oklch(70.7% 0.055 205)
-
Step 500
500
#51969E
oklch(63.1% 0.071 205.3)
-
Step 600
600
#318089
oklch(55.6% 0.077 205.7)
-
Step 700
700 (this color)
#16636B
oklch(45.9% 0.071 205.5)
-
Step 800
800
#1F585F
oklch(42.6% 0.059 206.5)
-
Step 900
900
#20494D
oklch(37.8% 0.046 203.9)
-
Step 950
950
#142B2D
oklch(27.1% 0.029 202.9)
#16636B 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) | #5A5F6C | 0.070 |
| Deuteranopia (no green cones) | #4E566B | 0.064 |
| Tritanopia (no blue cones) | #006865 | 0.022 |
| Achromatopsia (no color) | #5A5A5A | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16636B
#16636B
oklch(45.9% 0.071 205.5)
- #7B4743
#7B4743
oklch(45.8% 0.072 25)
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 #16636B, 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 0.033
- Deep Turquoise #017374 ΔE 0.048
- Dark Aquamarine #017371 ΔE 0.049
- Deep Teal #00555A ΔE 0.050
- YInMn Blue #415A77 ΔE 0.053
- Slate #516572 ΔE 0.059
Use #16636B 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.