#5075CB
Closest named color: Windows Blue (#3778BF). oklch(57.7% 0.139 264.9), rgb(80, 117, 203).
Aa
Black text reads best on this color (4.74:1).
About this color
#5075CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 58%, its chroma 0.139 and its hue 265°. 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 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.74:1 |
| White text | 4.42:1 |
Values
| HEX | #5075CB |
| RGB | rgb(80, 117, 203) |
| HSL | hsl(222, 54%, 55%) |
| OKLCH | oklch(57.7% 0.139 264.9) |
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 #5075CB | 4.42:1 | AA large text | Lc -75.9 | Fine for body text |
| Black text on #5075CB | 4.74:1 | AA | Lc 33.6 | Non-text elements, placeholder text |
| #5075CB text on white | 4.42:1 | AA large text | Lc 70.5 | Content text, not long reading |
| #5075CB text on black | 4.74:1 | AA | Lc -31.2 | 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
#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
#82A0E0
oklch(70.8% 0.1 264.7)
-
Step 500
500
#6386D7
oklch(63% 0.129 265.2)
-
Step 600
600 (this color)
#5075CB
oklch(57.7% 0.139 264.9)
-
Step 700
700
#3C5CA9
oklch(49.1% 0.129 265)
-
Step 800
800
#314C89
oklch(42.8% 0.106 264.4)
-
Step 900
900
#2B406E
oklch(37.8% 0.083 264.3)
-
Step 950
950
#192540
oklch(26.8% 0.053 264.9)
#5075CB 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) | #4E7ECE | 0.024 |
| Deuteranopia (no green cones) | #3D73C9 | 0.021 |
| Tritanopia (no blue cones) | #008896 | 0.119 |
| Achromatopsia (no color) | #787878 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5075CB
#5075CB
oklch(57.7% 0.139 264.9)
- #997200
#997200
oklch(57.5% 0.118 84.7)
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 #5075CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.032
- Royal Blue #4169E1 ΔE 0.052
- French Blue #436BAD ΔE 0.054
- Cool Blue #4984B8 ΔE 0.056
- Steel Blue #4682B4 ΔE 0.057
- Water Blue #0E87CC ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.061
Use #5075CB 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.