#5778D2
Closest named color: Windows Blue (#3778BF). oklch(59.1% 0.143 266.9), rgb(87, 120, 210).
Aa
Black text reads best on this color (5.02:1).
About this color
#5778D2 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.143 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.045 away. Black text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.02:1 |
| White text | 4.18:1 |
Values
| HEX | #5778D2 |
| RGB | rgb(87, 120, 210) |
| HSL | hsl(224, 58%, 58%) |
| OKLCH | oklch(59.1% 0.143 266.9) |
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 #5778D2 | 4.18:1 | AA large text | Lc -74.1 | Content text, not long reading |
| Black text on #5778D2 | 5.02:1 | AA | Lc 35.5 | Non-text elements, placeholder text |
| #5778D2 text on white | 4.18:1 | AA large text | Lc 68.6 | Content text, not long reading |
| #5778D2 text on black | 5.02:1 | AA | Lc -33.1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400
#849FE1
oklch(70.8% 0.102 266.8)
-
Step 500
500
#6585D9
oklch(63.1% 0.132 266.9)
-
Step 600
600 (this color)
#5778D2
oklch(59.1% 0.143 266.9)
-
Step 700
700
#3E5BAB
oklch(49.1% 0.132 266.6)
-
Step 800
800
#344B8B
oklch(42.8% 0.11 266.9)
-
Step 900
900
#2D3F6F
oklch(37.8% 0.085 266.8)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#5778D2 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) | #5082D5 | 0.026 |
| Deuteranopia (no green cones) | #3F77D0 | 0.025 |
| Tritanopia (no blue cones) | #008C9B | 0.125 |
| Achromatopsia (no color) | #7C7C7C | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5778D2
#5778D2
oklch(59.1% 0.143 266.9)
- #9D7800
#9D7800
oklch(59.3% 0.121 86.9)
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 #5778D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.045
- Royal Blue #4169E1 ΔE 0.055
- Soft Blue #6488EA ΔE 0.056
- Cool Blue #4984B8 ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.059
- Water Blue #0E87CC ΔE 0.060
- Cornflower #6A79F7 ΔE 0.062
- Steel Blue #4682B4 ΔE 0.062
Use #5778D2 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.