#3C7BD6
Closest named color: Windows Blue (#3778BF). oklch(58.8% 0.154 257.9), rgb(60, 123, 214).
Aa
Black text reads best on this color (4.99:1).
About this color
#3C7BD6 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.154 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.036 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #3C7BD6 |
| RGB | rgb(60, 123, 214) |
| HSL | hsl(215, 65%, 54%) |
| OKLCH | oklch(58.8% 0.154 257.9) |
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 #3C7BD6 | 4.20:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #3C7BD6 | 4.99:1 | AA | Lc 35.4 | Non-text elements, placeholder text |
| #3C7BD6 text on white | 4.20:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #3C7BD6 text on black | 4.99:1 | AA | Lc -33.0 | 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 600.
-
Step 50
50
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EBF8
oklch(93.7% 0.02 257.5)
-
Step 200
200
#CADAF3
oklch(88.4% 0.039 259.3)
-
Step 300
300
#A5C3EE
oklch(81% 0.069 257.4)
-
Step 400
400
#74A2E5
oklch(70.7% 0.111 257.7)
-
Step 500
500
#4F89DE
oklch(63.1% 0.142 257.9)
-
Step 600
600 (this color)
#3C7BD6
oklch(58.8% 0.154 257.9)
-
Step 700
700
#255EB0
oklch(49% 0.144 258.1)
-
Step 800
800
#204D8E
oklch(42.6% 0.119 258)
-
Step 900
900
#204172
oklch(37.7% 0.093 258.2)
-
Step 950
950
#132643
oklch(26.9% 0.06 258.6)
#3C7BD6 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) | #4F83DA | 0.030 |
| Deuteranopia (no green cones) | #3475D4 | 0.018 |
| Tritanopia (no blue cones) | #00909E | 0.120 |
| Achromatopsia (no color) | #7C7C7C | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C7BD6
#3C7BD6
oklch(58.8% 0.154 257.9)
- #A47200
#A47200
oklch(58.8% 0.123 78.2)
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 #3C7BD6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.036
- Water Blue #0E87CC ΔE 0.042
- Royal Blue #4169E1 ΔE 0.051
- Dark Sky Blue #448EE4 ΔE 0.054
- Cool Blue #4984B8 ΔE 0.058
- Clear Blue #247AFD ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Steel Blue #4682B4 ΔE 0.061
Use #3C7BD6 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.