#16739C
Closest named color: Ocean Blue (#03719C). oklch(52.4% 0.103 233.9), rgb(22, 115, 156).
Aa
White text reads best on this color (5.29:1).
About this color
#16739C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.103 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean Blue (#03719C), ΔE 0.009 away. White text reads best on it, at 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Ocean Blue (#03719C) |
| Black text | 3.96:1 |
| White text | 5.29:1 |
Values
| HEX | #16739C |
| RGB | rgb(22, 115, 156) |
| HSL | hsl(198, 75%, 35%) |
| OKLCH | oklch(52.4% 0.103 233.9) |
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 #16739C | 5.29:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #16739C | 3.96:1 | AA large text | Lc 28.2 | Dividers and decoration only |
| #16739C text on white | 5.29:1 | AA | Lc 75.9 | Fine for body text |
| #16739C text on black | 3.96:1 | AA large text | Lc -25.8 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2ECF2
oklch(93.7% 0.013 233.7)
-
Step 200
200
#C9DCE8
oklch(88.4% 0.026 235.4)
-
Step 300
300
#A4C6DA
oklch(80.8% 0.046 233.9)
-
Step 400
400
#71A9C8
oklch(70.8% 0.074 233.5)
-
Step 500
500
#4893BA
oklch(63.2% 0.095 233.7)
-
Step 600
600 (this color)
#16739C
oklch(52.4% 0.103 233.9)
-
Step 700
700
#15698E
oklch(49.2% 0.095 233.5)
-
Step 800
800
#165673
oklch(42.8% 0.078 232.9)
-
Step 900
900
#1A475D
oklch(37.7% 0.061 233)
-
Step 950
950
#112A37
oklch(27.2% 0.039 233.4)
#16739C 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) | #5F729E | 0.064 |
| Deuteranopia (no green cones) | #4D669B | 0.053 |
| Tritanopia (no blue cones) | #007E81 | 0.063 |
| Achromatopsia (no color) | #6B6B6B | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #16739C
#16739C
oklch(52.4% 0.103 233.9)
- #97582B
#97582B
oklch(52.4% 0.102 53.8)
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 #16739C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean Blue #03719C ΔE 0.009
- Sea Blue #047495 ΔE 0.014
- Muted Blue #3B719F ΔE 0.025
- Ocean #017B92 ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.033
- Nice Blue #107AB0 ΔE 0.034
- Peacock Blue #016795 ΔE 0.038
- Dull Blue #49759C ΔE 0.039
Use #16739C 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.