#506BD7
Closest named color: Royal Blue (#4169E1). oklch(56.4% 0.168 269.8), rgb(80, 107, 215).
Aa
White text reads best on this color (4.74:1).
About this color
#506BD7 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.168 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.023 away. White text reads best on it, at 4.74:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.42:1 |
| White text | 4.74:1 |
Values
| HEX | #506BD7 |
| RGB | rgb(80, 107, 215) |
| HSL | hsl(228, 63%, 58%) |
| OKLCH | oklch(56.4% 0.168 269.8) |
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 #506BD7 | 4.74:1 | AA | Lc -78.1 | Fine for body text |
| Black text on #506BD7 | 4.42:1 | AA large text | Lc 31.5 | Non-text elements, placeholder text |
| #506BD7 text on white | 4.74:1 | AA | Lc 72.6 | Content text, not long reading |
| #506BD7 text on black | 4.42:1 | AA large text | Lc -29.1 | Dividers and decoration only |
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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CED9F6
oklch(88.6% 0.042 269)
-
Step 300
300
#ADBFF2
oklch(80.9% 0.075 269.5)
-
Step 400
400
#839CEC
oklch(70.7% 0.121 269.9)
-
Step 500
500
#6581E6
oklch(63% 0.155 269.9)
-
Step 600
600 (this color)
#506BD7
oklch(56.4% 0.168 269.8)
-
Step 700
700
#3F56B8
oklch(49% 0.157 269.8)
-
Step 800
800
#344795
oklch(42.7% 0.13 269.8)
-
Step 900
900
#2D3C77
oklch(37.6% 0.102 270.2)
-
Step 950
950
#1A2445
oklch(27% 0.063 269.2)
#506BD7 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) | #2E79DB | 0.042 |
| Deuteranopia (no green cones) | #046DD5 | 0.049 |
| Tritanopia (no blue cones) | #008497 | 0.142 |
| Achromatopsia (no color) | #737373 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #506BD7
#506BD7
oklch(56.4% 0.168 269.8)
- #907100
#907100
oklch(56.3% 0.115 89.5)
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 #506BD7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.023
- Dark Periwinkle #665FD1 ΔE 0.038
- Neon Blue #4361EE ΔE 0.047
- Warm Blue #4B57DB ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.053
- Iris #6258C4 ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.056
Use #506BD7 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.