#0E66BF
Closest named color: Mid Blue (#276AB3). oklch(51.4% 0.159 254.4), rgb(14, 102, 191).
Aa
White text reads best on this color (5.71:1).
About this color
#0E66BF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.159 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.026 away. White text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.67:1 |
| White text | 5.71:1 |
Values
| HEX | #0E66BF |
| RGB | rgb(14, 102, 191) |
| HSL | hsl(210, 86%, 40%) |
| OKLCH | oklch(51.4% 0.159 254.4) |
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 #0E66BF | 5.71:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #0E66BF | 3.67:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #0E66BF text on white | 5.71:1 | AA | Lc 78.0 | Fine for body text |
| #0E66BF text on black | 3.67:1 | AA large text | Lc -23.8 | 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 700.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF9
oklch(93.6% 0.022 254.4)
-
Step 200
200
#C6DBF6
oklch(88.4% 0.044 254.8)
-
Step 300
300
#9FC4F2
oklch(81% 0.077 254.1)
-
Step 400
400
#69A3EC
oklch(70.6% 0.124 254.8)
-
Step 500
500
#3D8AE6
oklch(63.1% 0.158 254.8)
-
Step 600
600
#1372D4
oklch(55.6% 0.171 254.6)
-
Step 700
700 (this color)
#0E66BF
oklch(51.4% 0.159 254.4)
-
Step 800
800
#094E94
oklch(42.7% 0.131 254.4)
-
Step 900
900
#134276
oklch(37.8% 0.102 254)
-
Step 950
950
#0D2745
oklch(27% 0.064 254)
#0E66BF 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) | #346EC2 | 0.034 |
| Deuteranopia (no green cones) | #005FBD | 0.020 |
| Tritanopia (no blue cones) | #007C89 | 0.119 |
| Achromatopsia (no color) | #666666 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0E66BF
#0E66BF
oklch(51.4% 0.159 254.4)
- #8B5C00
#8B5C00
oklch(51.3% 0.108 74.5)
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 #0E66BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.026
- French Blue #436BAD ΔE 0.050
- Windows Blue #3778BF ΔE 0.059
- Flat Blue #3C73A8 ΔE 0.065
- Royal Blue #4169E1 ΔE 0.065
- Nice Blue #107AB0 ΔE 0.066
- Peacock Blue #016795 ΔE 0.069
- Ocean Blue #03719C ΔE 0.069
Use #0E66BF 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.