#3785E1
Closest named color: Dark Sky Blue (#448EE4). oklch(61.5% 0.159 254.7), rgb(55, 133, 225).
Aa
Black text reads best on this color (5.60:1).
About this color
#3785E1 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.159 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #3785E1 |
| RGB | rgb(55, 133, 225) |
| HSL | hsl(212, 74%, 55%) |
| OKLCH | oklch(61.5% 0.159 254.7) |
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 #3785E1 | 3.74:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #3785E1 | 5.60:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #3785E1 text on white | 3.74:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #3785E1 text on black | 5.60:1 | AA | Lc -37.0 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
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
#9FC4F3
oklch(81% 0.078 254.6)
-
Step 400
400
#69A3EC
oklch(70.6% 0.124 254.8)
-
Step 500
500 (this color)
#3785E1
oklch(61.5% 0.159 254.7)
-
Step 600
600
#1272D5
oklch(55.7% 0.173 254.7)
-
Step 700
700
#005FB8
oklch(49.1% 0.16 254.6)
-
Step 800
800
#094E95
oklch(42.7% 0.132 254.6)
-
Step 900
900
#134177
oklch(37.6% 0.104 255.1)
-
Step 950
950
#0D2746
oklch(27.1% 0.066 254.6)
#3785E1 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) | #588CE5 | 0.037 |
| Deuteranopia (no green cones) | #3B7DDF | 0.021 |
| Tritanopia (no blue cones) | #009BA8 | 0.122 |
| Achromatopsia (no color) | #848484 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3785E1
#3785E1
oklch(61.5% 0.159 254.7)
- #B27700
#B27700
oklch(61.5% 0.13 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 #3785E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.028
- Water Blue #0E87CC ΔE 0.039
- Soft Blue #6488EA ΔE 0.046
- Dodger Blue #1E90FF ΔE 0.049
- Chefchaouen Blue #4895EF ΔE 0.049
- Clear Blue #247AFD ΔE 0.055
- Windows Blue #3778BF ΔE 0.058
- Cool Blue #4984B8 ΔE 0.063
Use #3785E1 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.