#186F8B
Closest named color: Sea Blue (#047495). oklch(50.6% 0.089 225.2), rgb(24, 111, 139).
Aa
White text reads best on this color (5.69:1).
About this color
#186F8B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.089 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.019 away. White text reads best on it, at 5.69:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.68:1 |
| White text | 5.69:1 |
Values
| HEX | #186F8B |
| RGB | rgb(24, 111, 139) |
| HSL | hsl(195, 71%, 32%) |
| OKLCH | oklch(50.6% 0.089 225.2) |
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 #186F8B | 5.69:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #186F8B | 3.68:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #186F8B text on white | 5.69:1 | AA | Lc 78.1 | Fine for body text |
| #186F8B text on black | 3.68:1 | AA large text | Lc -23.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A4C7D6
oklch(80.9% 0.043 225.7)
-
Step 400
400
#71AAC1
oklch(70.7% 0.068 225.3)
-
Step 500
500
#4795B1
oklch(63.2% 0.087 224.3)
-
Step 600
600
#217E9D
oklch(55.5% 0.095 225.4)
-
Step 700
700 (this color)
#186F8B
oklch(50.6% 0.089 225.2)
-
Step 800
800
#13576D
oklch(42.7% 0.073 224.9)
-
Step 900
900
#194858
oklch(37.7% 0.057 224)
-
Step 950
950
#102A34
oklch(27% 0.037 225.8)
#186F8B 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) | #606D8C | 0.068 |
| Deuteranopia (no green cones) | #51628B | 0.059 |
| Tritanopia (no blue cones) | #007778 | 0.046 |
| Achromatopsia (no color) | #676767 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #186F8B
#186F8B
oklch(50.6% 0.089 225.2)
- #8E5438
#8E5438
oklch(50.6% 0.088 45.9)
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 #186F8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.019
- Ocean Blue #03719C ΔE 0.027
- Peacock Blue #016795 ΔE 0.034
- Ocean #017B92 ΔE 0.035
- Deep Aqua #08787F ΔE 0.039
- Denim #3B638C ΔE 0.041
- Muted Blue #3B719F ΔE 0.043
- Deep Turquoise #017374 ΔE 0.044
Use #186F8B 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.