#186EF6
Closest named color: Cerulean Blue (#056EEE). oklch(57.4% 0.218 260.2), rgb(24, 110, 246).
Aa
Black text reads best on this color (4.59:1).
About this color
#186EF6 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.218 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean Blue (#056EEE), ΔE 0.014 away. Black text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.218) |
| Temperature | cool |
| Nearest name | Cerulean Blue (#056EEE) |
| Black text | 4.59:1 |
| White text | 4.56:1 |
Values
| HEX | #186EF6 |
| RGB | rgb(24, 110, 246) |
| HSL | hsl(217, 93%, 53%) |
| OKLCH | oklch(57.4% 0.218 260.2) |
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 #186EF6 | 4.56:1 | AA | Lc -76.4 | Fine for body text |
| Black text on #186EF6 | 4.59:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #186EF6 text on white | 4.56:1 | AA | Lc 70.9 | Content text, not long reading |
| #186EF6 text on black | 4.59:1 | AA | Lc -30.8 | 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 600.
-
Step 50
50
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DFEBFD
oklch(93.6% 0.028 258.4)
-
Step 200
200
#C5DAFE
oklch(88.4% 0.055 261.2)
-
Step 300
300
#9DC2FF
oklch(81% 0.096 260.2)
-
Step 400
400
#669FFF
oklch(70.7% 0.154 260.3)
-
Step 500
500
#3983FF
oklch(63.1% 0.199 260.2)
-
Step 600
600 (this color)
#186EF6
oklch(57.4% 0.218 260.2)
-
Step 700
700
#0056D0
oklch(49.2% 0.201 260.1)
-
Step 800
800
#0747A9
oklch(42.8% 0.168 260.2)
-
Step 900
900
#113D85
oklch(37.7% 0.13 260.1)
-
Step 950
950
#0C244E
oklch(26.9% 0.083 260.7)
#186EF6 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) | #0080FB | 0.044 |
| Deuteranopia (no green cones) | #006CF3 | 0.010 |
| Tritanopia (no blue cones) | #0090A7 | 0.166 |
| Achromatopsia (no color) | #767676 | 0.219 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #186EF6
#186EF6
oklch(57.4% 0.218 260.2)
- #9D6F00
#9D6F00
oklch(57.4% 0.119 79.8)
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 #186EF6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean Blue #056EEE ΔE 0.014
- Bright Blue #0165FC ΔE 0.025
- Clear Blue #247AFD ΔE 0.033
- Neon Blue #4361EE ΔE 0.038
- Royal Blue #4169E1 ΔE 0.040
- Azul #1D5DEC ΔE 0.042
- Electric Blue #0652FF ΔE 0.064
- Warm Blue #4B57DB ΔE 0.070
Use #186EF6 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.