#5779C0
Closest named color: Windows Blue (#3778BF). oklch(58.3% 0.116 263.8), rgb(87, 121, 192).
Aa
Black text reads best on this color (4.90:1).
About this color
#5779C0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.116 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.032 away. Black text reads best on it, at 4.90:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.90:1 |
| White text | 4.28:1 |
Values
| HEX | #5779C0 |
| RGB | rgb(87, 121, 192) |
| HSL | hsl(221, 45%, 55%) |
| OKLCH | oklch(58.3% 0.116 263.8) |
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 #5779C0 | 4.28:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #5779C0 | 4.90:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #5779C0 text on white | 4.28:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #5779C0 text on black | 4.90:1 | AA | Lc -32.2 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFD9ED
oklch(88.4% 0.03 264.4)
-
Step 300
300
#AFC1E3
oklch(80.9% 0.052 263.1)
-
Step 400
400
#86A0D6
oklch(70.6% 0.085 264.4)
-
Step 500
500
#6888CA
oklch(63.1% 0.107 263.9)
-
Step 600
600 (this color)
#5779C0
oklch(58.3% 0.116 263.8)
-
Step 700
700
#405E9E
oklch(49% 0.109 263.9)
-
Step 800
800
#354D80
oklch(42.6% 0.09 263.9)
-
Step 900
900
#2E4167
oklch(37.8% 0.07 263.2)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#5779C0 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) | #5C7FC3 | 0.018 |
| Deuteranopia (no green cones) | #5076BE | 0.013 |
| Tritanopia (no blue cones) | #1B8993 | 0.105 |
| Achromatopsia (no color) | #7A7A7A | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5779C0
#5779C0
oklch(58.3% 0.116 263.8)
- #9C740D
#9C740D
oklch(58.3% 0.116 83.6)
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 #5779C0, closest first.
No curated palette has a color within ΔE 0.04 of #5779C0.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.032
- Cool Blue #4984B8 ΔE 0.037
- Steel Blue #4682B4 ΔE 0.038
- Off Blue #5684AE ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.053
- French Blue #436BAD ΔE 0.053
- Water Blue #0E87CC ΔE 0.055
Use #5779C0 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.