#3785CB
Closest named color: Water Blue (#0E87CC). oklch(60.2% 0.131 248.9), rgb(55, 133, 203).
Aa
Black text reads best on this color (5.37:1).
About this color
#3785CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.131 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.018 away. Black text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.37:1 |
| White text | 3.90:1 |
Values
| HEX | #3785CB |
| RGB | rgb(55, 133, 203) |
| HSL | hsl(208, 59%, 51%) |
| OKLCH | oklch(60.2% 0.131 248.9) |
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 #3785CB | 3.90:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #3785CB | 5.37:1 | AA | Lc 37.9 | Non-text elements, placeholder text |
| #3785CB text on white | 3.90:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #3785CB text on black | 5.37:1 | AA | Lc -35.5 | 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
#C8DCF0
oklch(88.6% 0.035 248.2)
-
Step 300
300
#A1C5E9
oklch(81% 0.064 248.6)
-
Step 400
400
#6CA6DE
oklch(70.8% 0.103 248.6)
-
Step 500
500 (this color)
#3785CB
oklch(60.2% 0.131 248.9)
-
Step 600
600
#1977C2
oklch(55.6% 0.142 248.8)
-
Step 700
700
#0663A8
oklch(49% 0.134 249.3)
-
Step 800
800
#0D5188
oklch(42.6% 0.111 249.2)
-
Step 900
900
#16446D
oklch(37.8% 0.086 249.1)
-
Step 950
950
#0E2840
oklch(27% 0.055 249)
#3785CB 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) | #6588CE | 0.046 |
| Deuteranopia (no green cones) | #507BCA | 0.032 |
| Tritanopia (no blue cones) | #00969E | 0.098 |
| Achromatopsia (no color) | #818181 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3785CB
#3785CB
oklch(60.2% 0.131 248.9)
- #B27000
#B27000
oklch(60.2% 0.131 69.4)
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 #3785CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.018
- Cool Blue #4984B8 ΔE 0.031
- Steel Blue #4682B4 ΔE 0.035
- Windows Blue #3778BF ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.045
- Blue NCS #118AB2 ΔE 0.049
- Off Blue #5684AE ΔE 0.050
- Dusty Blue #5A86AD ΔE 0.055
Use #3785CB 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.