#5373DB
Closest named color: Royal Blue (#4169E1). oklch(58.5% 0.163 268.2), rgb(83, 115, 219).
Aa
Black text reads best on this color (4.84:1).
About this color
#5373DB is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.163 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.036 away. Black text reads best on it, at 4.84:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.84:1 |
| White text | 4.33:1 |
Values
| HEX | #5373DB |
| RGB | rgb(83, 115, 219) |
| HSL | hsl(226, 65%, 59%) |
| OKLCH | oklch(58.5% 0.163 268.2) |
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 #5373DB | 4.33:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #5373DB | 4.84:1 | AA | Lc 34.3 | Non-text elements, placeholder text |
| #5373DB text on white | 4.33:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #5373DB text on black | 4.84:1 | AA | Lc -31.9 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#819DEA
oklch(70.6% 0.118 268.1)
-
Step 500
500
#6383E3
oklch(63.1% 0.149 268.1)
-
Step 600
600 (this color)
#5373DB
oklch(58.5% 0.163 268.2)
-
Step 700
700
#3D58B5
oklch(49.1% 0.151 268.2)
-
Step 800
800
#324893
oklch(42.6% 0.126 268.3)
-
Step 900
900
#2C3D75
oklch(37.7% 0.098 268.7)
-
Step 950
950
#1A2444
oklch(26.9% 0.061 268.9)
#5373DB 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) | #3E80DF | 0.036 |
| Deuteranopia (no green cones) | #2474D9 | 0.039 |
| Tritanopia (no blue cones) | #008B9C | 0.139 |
| Achromatopsia (no color) | #797979 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5373DB
#5373DB
oklch(58.5% 0.163 268.2)
- #997600
#997600
oklch(58.4% 0.119 87.8)
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 #5373DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.036
- Dark Periwinkle #665FD1 ΔE 0.052
- Cornflower #6A79F7 ΔE 0.054
- Windows Blue #3778BF ΔE 0.055
- Neon Blue #4361EE ΔE 0.059
- Clear Blue #247AFD ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Soft Blue #6488EA ΔE 0.062
Use #5373DB 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.