#5A73D8
Closest named color: Royal Blue (#4169E1). oklch(58.7% 0.156 270.5), rgb(90, 115, 216).
Aa
Black text reads best on this color (4.87:1).
About this color
#5A73D8 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.156 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.043 away. Black text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.87:1 |
| White text | 4.30:1 |
Values
| HEX | #5A73D8 |
| RGB | rgb(90, 115, 216) |
| HSL | hsl(228, 62%, 60%) |
| OKLCH | oklch(58.7% 0.156 270.5) |
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 #5A73D8 | 4.30:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #5A73D8 | 4.87:1 | AA | Lc 34.5 | Non-text elements, placeholder text |
| #5A73D8 text on white | 4.30:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #5A73D8 text on black | 4.87:1 | AA | Lc -32.1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD8F4
oklch(88.4% 0.04 271.4)
-
Step 300
300
#AFBFEF
oklch(80.9% 0.07 270.4)
-
Step 400
400
#869CE7
oklch(70.6% 0.113 270.8)
-
Step 500
500
#6982E0
oklch(63.1% 0.144 270.6)
-
Step 600
600 (this color)
#5A73D8
oklch(58.7% 0.156 270.5)
-
Step 700
700
#4357B2
oklch(49% 0.146 270.8)
-
Step 800
800
#374890
oklch(42.7% 0.12 270.6)
-
Step 900
900
#2F3D73
oklch(37.7% 0.094 270.4)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#5A73D8 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) | #4380DC | 0.037 |
| Deuteranopia (no green cones) | #2F75D6 | 0.041 |
| Tritanopia (no blue cones) | #008A9B | 0.138 |
| Achromatopsia (no color) | #7A7A7A | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A73D8
#5A73D8
oklch(58.7% 0.156 270.5)
- #977800
#977800
oklch(58.6% 0.12 90.6)
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 #5A73D8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.043
- Dark Periwinkle #665FD1 ΔE 0.050
- Cornflower #6A79F7 ΔE 0.053
- Windows Blue #3778BF ΔE 0.056
- Soft Blue #6488EA ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.062
- Slate Blue #6A5ACD ΔE 0.062
- Light Indigo #6D5ACF ΔE 0.063
Use #5A73D8 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.