#5279BC
Closest named color: Windows Blue (#3778BF). oklch(57.8% 0.113 260.7), rgb(82, 121, 188).
Aa
Black text reads best on this color (4.81:1).
About this color
#5279BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.113 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.026 away. Black text reads best on it, at 4.81:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.81:1 |
| White text | 4.35:1 |
Values
| HEX | #5279BC |
| RGB | rgb(82, 121, 188) |
| HSL | hsl(218, 44%, 53%) |
| OKLCH | oklch(57.8% 0.113 260.7) |
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 #5279BC | 4.35:1 | AA large text | Lc -75.5 | Fine for body text |
| Black text on #5279BC | 4.81:1 | AA | Lc 34.1 | Non-text elements, placeholder text |
| #5279BC text on white | 4.35:1 | AA large text | Lc 70.0 | Content text, not long reading |
| #5279BC text on black | 4.81:1 | AA | Lc -31.6 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AEC2E2
oklch(81% 0.05 259.8)
-
Step 400
400
#84A1D4
oklch(70.6% 0.082 261.5)
-
Step 500
500
#658AC8
oklch(63.2% 0.103 260.4)
-
Step 600
600 (this color)
#5279BC
oklch(57.8% 0.113 260.7)
-
Step 700
700
#3D609C
oklch(49.2% 0.105 260.6)
-
Step 800
800
#334E7E
oklch(42.6% 0.087 261.2)
-
Step 900
900
#2C4165
oklch(37.6% 0.068 260.7)
-
Step 950
950
#1A263B
oklch(26.8% 0.043 261.2)
#5279BC 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) | #5E7EBF | 0.021 |
| Deuteranopia (no green cones) | #5074BB | 0.014 |
| Tritanopia (no blue cones) | #048892 | 0.101 |
| Achromatopsia (no color) | #797979 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5279BC
#5279BC
oklch(57.8% 0.113 260.7)
- #9C7115
#9C7115
oklch(57.8% 0.113 80.3)
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 #5279BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.026
- Steel Blue #4682B4 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.043
- Off Blue #5684AE ΔE 0.043
- French Blue #436BAD ΔE 0.048
- Dusty Blue #5A86AD ΔE 0.050
- Nice Blue #107AB0 ΔE 0.051
Use #5279BC 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.