#505DDF
Closest named color: Warm Blue (#4B57DB). oklch(54.4% 0.196 273.6), rgb(80, 93, 223).
Aa
White text reads best on this color (5.28:1).
About this color
#505DDF is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.196 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.017 away. White text reads best on it, at 5.28:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #505DDF |
| RGB | rgb(80, 93, 223) |
| HSL | hsl(235, 69%, 59%) |
| OKLCH | oklch(54.4% 0.196 273.6) |
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 #505DDF | 5.28:1 | AA | Lc -81.2 | Fine for body text |
| Black text on #505DDF | 3.97:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #505DDF text on white | 5.28:1 | AA | Lc 75.8 | Fine for body text |
| #505DDF text on black | 3.97:1 | AA large text | Lc -25.9 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#AEBDFA
oklch(80.9% 0.088 273.6)
-
Step 400
400
#8598F8
oklch(70.6% 0.142 273.8)
-
Step 500
500
#697CF5
oklch(63.2% 0.18 273.4)
-
Step 600
600 (this color)
#505DDF
oklch(54.4% 0.196 273.6)
-
Step 700
700
#444FC6
oklch(49.1% 0.183 273.5)
-
Step 800
800
#3842A0
oklch(42.8% 0.151 273.6)
-
Step 900
900
#2F397F
oklch(37.7% 0.118 273.3)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#505DDF 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) | #0072E3 | 0.064 |
| Deuteranopia (no green cones) | #0065DC | 0.054 |
| Tritanopia (no blue cones) | #007D95 | 0.163 |
| Achromatopsia (no color) | #6C6C6C | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505DDF
#505DDF
oklch(54.4% 0.196 273.6)
- #866D00
#866D00
oklch(54.3% 0.111 92.9)
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 #505DDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.017
- Neon Blue #4361EE ΔE 0.027
- Royal Blue #4169E1 ΔE 0.030
- Dark Periwinkle #665FD1 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.048
- Iris #6258C4 ΔE 0.048
- Azul #1D5DEC ΔE 0.049
Use #505DDF 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.