#5374DB
Closest named color: Royal Blue (#4169E1). oklch(58.7% 0.161 267.8), rgb(83, 116, 219).
Aa
Black text reads best on this color (4.88:1).
About this color
#5374DB is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.161 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.038 away. Black text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #5374DB |
| RGB | rgb(83, 116, 219) |
| HSL | hsl(225, 65%, 59%) |
| OKLCH | oklch(58.7% 0.161 267.8) |
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 #5374DB | 4.29:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #5374DB | 4.88:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #5374DB text on white | 4.29:1 | AA large text | Lc 69.4 | Content text, not long reading |
| #5374DB text on black | 4.88:1 | AA | Lc -32.2 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#819DE9
oklch(70.6% 0.116 268)
-
Step 500
500
#6383E3
oklch(63.1% 0.149 268.1)
-
Step 600
600 (this color)
#5374DB
oklch(58.7% 0.161 267.8)
-
Step 700
700
#3C58B5
oklch(49.1% 0.151 267.9)
-
Step 800
800
#324992
oklch(42.8% 0.123 267.8)
-
Step 900
900
#2B3E75
oklch(37.8% 0.097 267.3)
-
Step 950
950
#192444
oklch(26.9% 0.062 267.8)
#5374DB 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) | #4080DF | 0.033 |
| Deuteranopia (no green cones) | #2774D9 | 0.038 |
| Tritanopia (no blue cones) | #008C9D | 0.138 |
| Achromatopsia (no color) | #7A7A7A | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5374DB
#5374DB
oklch(58.7% 0.161 267.8)
- #9A7700
#9A7700
oklch(58.7% 0.12 88)
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 #5374DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.038
- Cornflower #6A79F7 ΔE 0.053
- Dark Periwinkle #665FD1 ΔE 0.054
- Windows Blue #3778BF ΔE 0.054
- Clear Blue #247AFD ΔE 0.060
- Soft Blue #6488EA ΔE 0.060
- Neon Blue #4361EE ΔE 0.061
- Cerulean Blue #056EEE ΔE 0.061
Use #5374DB 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.