#505EC4
Closest named color: Iris (#6258C4). oklch(52.5% 0.158 273.8), rgb(80, 94, 196).
Aa
White text reads best on this color (5.61:1).
About this color
#505EC4 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.158 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.028 away. White text reads best on it, at 5.61:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.73:1 |
| White text | 5.61:1 |
Values
| HEX | #505EC4 |
| RGB | rgb(80, 94, 196) |
| HSL | hsl(233, 50%, 54%) |
| OKLCH | oklch(52.5% 0.158 273.8) |
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 #505EC4 | 5.61:1 | AA | Lc -83.1 | Fine for body text |
| Black text on #505EC4 | 3.73:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #505EC4 text on white | 5.61:1 | AA | Lc 77.8 | Fine for body text |
| #505EC4 text on black | 3.73:1 | AA large text | Lc -24.0 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B2BEEF
oklch(80.9% 0.071 274)
-
Step 400
400
#8A9BE8
oklch(70.7% 0.114 273.6)
-
Step 500
500
#6F80E1
oklch(63.1% 0.146 274)
-
Step 600
600 (this color)
#505EC4
oklch(52.5% 0.158 273.8)
-
Step 700
700
#4855B3
oklch(49% 0.148 273.7)
-
Step 800
800
#3B4691
oklch(42.6% 0.123 273.7)
-
Step 900
900
#323C73
oklch(37.7% 0.094 273.3)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#505EC4 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) | #236DC8 | 0.051 |
| Deuteranopia (no green cones) | #0063C2 | 0.056 |
| Tritanopia (no blue cones) | #007588 | 0.137 |
| Achromatopsia (no color) | #676767 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505EC4
#505EC4
oklch(52.5% 0.158 273.8)
- #7F6800
#7F6800
oklch(52.4% 0.107 93.6)
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 #505EC4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.028
- Dark Periwinkle #665FD1 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.041
- Warm Blue #4B57DB ΔE 0.041
- Light Indigo #6D5ACF ΔE 0.046
- Royal Blue #4169E1 ΔE 0.051
- French Blue #436BAD ΔE 0.055
- Mid Blue #276AB3 ΔE 0.057
Use #505EC4 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.