#506CEC
Closest named color: Royal Blue (#4169E1). oklch(58.1% 0.195 270), rgb(80, 108, 236).
Aa
Black text reads best on this color (4.69:1).
About this color
#506CEC is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.195 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.025 away. Black text reads best on it, at 4.69:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.195) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.69:1 |
| White text | 4.47:1 |
Values
| HEX | #506CEC |
| RGB | rgb(80, 108, 236) |
| HSL | hsl(229, 80%, 62%) |
| OKLCH | oklch(58.1% 0.195 270) |
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 #506CEC | 4.47:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #506CEC | 4.69:1 | AA | Lc 33.5 | Non-text elements, placeholder text |
| #506CEC text on white | 4.47:1 | AA large text | Lc 70.6 | Content text, not long reading |
| #506CEC text on black | 4.69:1 | AA | Lc -31.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FA
oklch(88.4% 0.049 270)
-
Step 300
300
#AABEFA
oklch(80.8% 0.088 270.1)
-
Step 400
400
#7F9BF8
oklch(70.8% 0.14 269.9)
-
Step 500
500
#607EF4
oklch(63% 0.179 269.9)
-
Step 600
600 (this color)
#506CEC
oklch(58.1% 0.195 270)
-
Step 700
700
#3B52C5
oklch(49.1% 0.181 269.8)
-
Step 800
800
#3144A0
oklch(42.8% 0.15 270)
-
Step 900
900
#2A3A7F
oklch(37.6% 0.118 270)
-
Step 950
950
#19234A
oklch(27.1% 0.073 270.1)
#506CEC 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) | #007EF0 | 0.056 |
| Deuteranopia (no green cones) | #0070E9 | 0.048 |
| Tritanopia (no blue cones) | #008BA2 | 0.160 |
| Achromatopsia (no color) | #777777 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506CEC
#506CEC
oklch(58.1% 0.195 270)
- #967600
#967600
oklch(58% 0.119 89.7)
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 #506CEC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.025
- Neon Blue #4361EE ΔE 0.032
- Cerulean Blue #056EEE ΔE 0.046
- Clear Blue #247AFD ΔE 0.048
- Cornflower #6A79F7 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.054
- Warm Blue #4B57DB ΔE 0.056
- Medium Slate Blue #7B68EE ΔE 0.057
Use #506CEC 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.