#186E8A
Closest named color: Sea Blue (#047495). oklch(50.3% 0.088 225.4), rgb(24, 110, 138).
Aa
White text reads best on this color (5.77:1).
About this color
#186E8A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 50%, its chroma 0.088 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.021 away. White text reads best on it, at 5.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #186E8A |
| RGB | rgb(24, 110, 138) |
| HSL | hsl(195, 70%, 32%) |
| OKLCH | oklch(50.3% 0.088 225.4) |
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 #186E8A | 5.77:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #186E8A | 3.63:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #186E8A text on white | 5.77:1 | AA | Lc 78.5 | Fine for body text |
| #186E8A text on black | 3.63:1 | AA large text | Lc -23.3 | 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
#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
#4794B1
oklch(63% 0.087 225.5)
-
Step 600
600
#227E9D
oklch(55.5% 0.095 225.6)
-
Step 700
700 (this color)
#186E8A
oklch(50.3% 0.088 225.4)
-
Step 800
800
#14576D
oklch(42.7% 0.073 225.1)
-
Step 900
900
#1A4858
oklch(37.8% 0.056 224.3)
-
Step 950
950
#112A34
oklch(27% 0.036 226.6)
#186E8A 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) | #5F6C8B | 0.067 |
| Deuteranopia (no green cones) | #50618A | 0.059 |
| Tritanopia (no blue cones) | #007677 | 0.046 |
| Achromatopsia (no color) | #666666 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #186E8A
#186E8A
oklch(50.3% 0.088 225.4)
- #8D5337
#8D5337
oklch(50.3% 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 #186E8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.021
- Ocean Blue #03719C ΔE 0.028
- Peacock Blue #016795 ΔE 0.033
- Ocean #017B92 ΔE 0.038
- Denim #3B638C ΔE 0.040
- Deep Aqua #08787F ΔE 0.040
- Muted Blue #3B719F ΔE 0.044
- Deep Turquoise #017374 ΔE 0.044
Use #186E8A 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.