#4186CB
Closest named color: Water Blue (#0E87CC). oklch(60.7% 0.126 250.7), rgb(65, 134, 203).
Aa
Black text reads best on this color (5.49:1).
About this color
#4186CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.126 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.025 away. Black text reads best on it, at 5.49:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.49:1 |
| White text | 3.82:1 |
Values
| HEX | #4186CB |
| RGB | rgb(65, 134, 203) |
| HSL | hsl(210, 57%, 53%) |
| OKLCH | oklch(60.7% 0.126 250.7) |
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 #4186CB | 3.82:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #4186CB | 5.49:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #4186CB text on white | 3.82:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #4186CB text on black | 5.49:1 | AA | Lc -36.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C9DBF0
oklch(88.4% 0.035 252.3)
-
Step 300
300
#A3C4E8
oklch(80.8% 0.062 250.8)
-
Step 400
400
#70A5DC
oklch(70.7% 0.099 250.2)
-
Step 500
500 (this color)
#4186CB
oklch(60.7% 0.126 250.7)
-
Step 600
600
#2776C0
oklch(55.6% 0.137 250.7)
-
Step 700
700
#1863A6
oklch(49.2% 0.128 250.6)
-
Step 800
800
#185186
oklch(42.7% 0.105 250.6)
-
Step 900
900
#1B436C
oklch(37.6% 0.084 251.5)
-
Step 950
950
#11283F
oklch(27.1% 0.052 250.3)
#4186CB 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) | #678ACE | 0.042 |
| Deuteranopia (no green cones) | #547DCA | 0.028 |
| Tritanopia (no blue cones) | #00969F | 0.097 |
| Achromatopsia (no color) | #828282 | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4186CB
#4186CB
oklch(60.7% 0.126 250.7)
- #B17311
#B17311
oklch(60.7% 0.126 70.7)
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 #4186CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.025
- Cool Blue #4984B8 ΔE 0.029
- Steel Blue #4682B4 ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.041
- Windows Blue #3778BF ΔE 0.043
- Off Blue #5684AE ΔE 0.046
- Faded Blue #658CBB ΔE 0.049
- Dusty Blue #5A86AD ΔE 0.050
Use #4186CB 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.