#5279CB
Closest named color: Windows Blue (#3778BF). oklch(58.6% 0.134 263.6), rgb(82, 121, 203).
Aa
Black text reads best on this color (4.95:1).
About this color
#5279CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.134 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.033 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #5279CB |
| RGB | rgb(82, 121, 203) |
| HSL | hsl(221, 54%, 56%) |
| OKLCH | oklch(58.6% 0.134 263.6) |
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 #5279CB | 4.23:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #5279CB | 4.95:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #5279CB text on white | 4.23:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #5279CB text on black | 4.95:1 | AA | Lc -32.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAF0
oklch(88.6% 0.033 262.7)
-
Step 300
300
#ADC1E8
oklch(80.9% 0.06 263.7)
-
Step 400
400
#82A0DD
oklch(70.7% 0.096 263.9)
-
Step 500
500
#6287D4
oklch(63% 0.124 263.8)
-
Step 600
600 (this color)
#5279CB
oklch(58.6% 0.134 263.6)
-
Step 700
700
#3B5DA7
oklch(49.1% 0.125 263.8)
-
Step 800
800
#314C87
oklch(42.6% 0.103 264)
-
Step 900
900
#2B406C
oklch(37.7% 0.08 263.7)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#5279CB 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) | #5581CE | 0.022 |
| Deuteranopia (no green cones) | #4576C9 | 0.017 |
| Tritanopia (no blue cones) | #008B98 | 0.116 |
| Achromatopsia (no color) | #7B7B7B | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5279CB
#5279CB
oklch(58.6% 0.134 263.6)
- #9E7400
#9E7400
oklch(58.5% 0.12 83.2)
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 #5279CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.033
- Cool Blue #4984B8 ΔE 0.048
- Steel Blue #4682B4 ΔE 0.050
- Water Blue #0E87CC ΔE 0.052
- French Blue #436BAD ΔE 0.060
- Off Blue #5684AE ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.061
- Royal Blue #4169E1 ΔE 0.061
Use #5279CB 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.