#506FD4
Closest named color: Royal Blue (#4169E1). oklch(57% 0.159 268.2), rgb(80, 111, 212).
Aa
White text reads best on this color (4.59:1).
About this color
#506FD4 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.159 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.032 away. White text reads best on it, at 4.59:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.56:1 |
| White text | 4.59:1 |
Values
| HEX | #506FD4 |
| RGB | rgb(80, 111, 212) |
| HSL | hsl(226, 61%, 57%) |
| OKLCH | oklch(57% 0.159 268.2) |
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 #506FD4 | 4.59:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #506FD4 | 4.56:1 | AA | Lc 32.4 | Non-text elements, placeholder text |
| #506FD4 text on white | 4.59:1 | AA | Lc 71.7 | Content text, not long reading |
| #506FD4 text on black | 4.56:1 | AA | Lc -30.0 | 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
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#ADC0F0
oklch(81% 0.071 267.9)
-
Step 400
400
#829DE8
oklch(70.6% 0.114 268.3)
-
Step 500
500
#6483E1
oklch(63% 0.146 268.3)
-
Step 600
600 (this color)
#506FD4
oklch(57% 0.159 268.2)
-
Step 700
700
#3E58B3
oklch(49% 0.147 268.5)
-
Step 800
800
#334991
oklch(42.8% 0.122 268.2)
-
Step 900
900
#2C3E74
oklch(37.8% 0.095 267.8)
-
Step 950
950
#1A2444
oklch(26.9% 0.061 268.9)
#506FD4 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) | #3C7BD8 | 0.033 |
| Deuteranopia (no green cones) | #2270D2 | 0.039 |
| Tritanopia (no blue cones) | #008697 | 0.135 |
| Achromatopsia (no color) | #757575 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506FD4
#506FD4
oklch(57% 0.159 268.2)
- #947200
#947200
oklch(57% 0.116 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 #506FD4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.045
- Windows Blue #3778BF ΔE 0.049
- Neon Blue #4361EE ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.060
- Iris #6258C4 ΔE 0.061
Use #506FD4 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.