#5379CE
Closest named color: Windows Blue (#3778BF). oklch(58.9% 0.137 264.4), rgb(83, 121, 206).
Aa
Black text reads best on this color (4.99:1).
About this color
#5379CE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.137 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.037 away. Black text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.99:1 |
| White text | 4.20:1 |
Values
| HEX | #5379CE |
| RGB | rgb(83, 121, 206) |
| HSL | hsl(221, 56%, 57%) |
| OKLCH | oklch(58.9% 0.137 264.4) |
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 #5379CE | 4.20:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #5379CE | 4.99:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #5379CE text on white | 4.20:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #5379CE text on black | 4.99:1 | AA | Lc -32.9 | 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
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC1EA
oklch(81% 0.062 264.6)
-
Step 400
400
#82A0DF
oklch(70.8% 0.099 264.5)
-
Step 500
500
#6387D6
oklch(63.2% 0.126 264.5)
-
Step 600
600 (this color)
#5379CE
oklch(58.9% 0.137 264.4)
-
Step 700
700
#3B5CA9
oklch(49% 0.129 264.6)
-
Step 800
800
#314C88
oklch(42.7% 0.105 264.2)
-
Step 900
900
#2B406D
oklch(37.7% 0.082 264)
-
Step 950
950
#192640
oklch(27.1% 0.052 263.2)
#5379CE 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) | #5482D1 | 0.024 |
| Deuteranopia (no green cones) | #4376CC | 0.020 |
| Tritanopia (no blue cones) | #008C99 | 0.120 |
| Achromatopsia (no color) | #7B7B7B | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5379CE
#5379CE
oklch(58.9% 0.137 264.4)
- #9E7600
#9E7600
oklch(58.9% 0.121 84.8)
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 #5379CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.037
- Cool Blue #4984B8 ΔE 0.051
- Water Blue #0E87CC ΔE 0.053
- Steel Blue #4682B4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.059
- Dark Sky Blue #448EE4 ΔE 0.059
- Soft Blue #6488EA ΔE 0.059
- French Blue #436BAD ΔE 0.064
Use #5379CE 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.