#4778BA
Closest named color: Windows Blue (#3778BF). oklch(56.9% 0.116 256.3), rgb(71, 120, 186).
Aa
Black text reads best on this color (4.66:1).
About this color
#4778BA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.116 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.016 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #4778BA |
| RGB | rgb(71, 120, 186) |
| HSL | hsl(214, 45%, 50%) |
| OKLCH | oklch(56.9% 0.116 256.3) |
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 #4778BA | 4.50:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #4778BA | 4.66:1 | AA | Lc 33.0 | Non-text elements, placeholder text |
| #4778BA text on white | 4.50:1 | AA | Lc 71.1 | Content text, not long reading |
| #4778BA text on black | 4.66:1 | AA | Lc -30.6 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EAF4
oklch(93.5% 0.015 257.2)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ABC3E3
oklch(81% 0.052 255.7)
-
Step 400
400
#7FA3D4
oklch(70.7% 0.082 256.2)
-
Step 500
500
#5E8BC9
oklch(63.1% 0.106 256.6)
-
Step 600
600 (this color)
#4778BA
oklch(56.9% 0.116 256.3)
-
Step 700
700
#35619D
oklch(49.1% 0.108 256.7)
-
Step 800
800
#2C507F
oklch(42.8% 0.089 255.8)
-
Step 900
900
#284266
oklch(37.6% 0.07 256.8)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#4778BA 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) | #5C7DBD | 0.029 |
| Deuteranopia (no green cones) | #4C72B9 | 0.016 |
| Tritanopia (no blue cones) | #008790 | 0.097 |
| Achromatopsia (no color) | #777777 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4778BA
#4778BA
oklch(56.9% 0.116 256.3)
- #9D6C0D
#9D6C0D
oklch(56.8% 0.116 76.3)
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 #4778BA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.016
- Steel Blue #4682B4 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.033
- Cool Blue #4984B8 ΔE 0.036
- French Blue #436BAD ΔE 0.039
- Nice Blue #107AB0 ΔE 0.039
- Dull Blue #49759C ΔE 0.046
- Muted Blue #3B719F ΔE 0.047
Use #4778BA 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.