#505AAD
Closest named color: Iris (#6258C4). oklch(50.1% 0.131 275.5), rgb(80, 90, 173).
Aa
White text reads best on this color (6.16:1).
About this color
#505AAD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.131 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.046 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #505AAD |
| RGB | rgb(80, 90, 173) |
| HSL | hsl(234, 37%, 50%) |
| OKLCH | oklch(50.1% 0.131 275.5) |
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 #505AAD | 6.16:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #505AAD | 3.40:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #505AAD text on white | 6.16:1 | AA | Lc 80.6 | Fine for body text |
| #505AAD text on black | 3.40:1 | AA large text | Lc -21.3 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEEA
oklch(80.9% 0.063 274.9)
-
Step 400
400
#8F9BE0
oklch(70.7% 0.102 275.9)
-
Step 500
500
#7481D7
oklch(63.1% 0.13 275.5)
-
Step 600
600
#5D69C4
oklch(55.6% 0.14 275.2)
-
Step 700
700 (this color)
#505AAD
oklch(50.1% 0.131 275.5)
-
Step 800
800
#3F4789
oklch(42.6% 0.109 275.6)
-
Step 900
900
#353C6E
oklch(37.6% 0.086 275.5)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#505AAD 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) | #3465B0 | 0.039 |
| Deuteranopia (no green cones) | #295EAB | 0.043 |
| Tritanopia (no blue cones) | #256C7B | 0.115 |
| Achromatopsia (no color) | #616161 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505AAD
#505AAD
oklch(50.1% 0.131 275.5)
- #766200
#766200
oklch(50.1% 0.103 95)
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 #505AAD, closest first.
No curated palette has a color within ΔE 0.04 of #505AAD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.046
- Dusky Blue #475F94 ΔE 0.047
- French Blue #436BAD ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.053
- Mid Blue #276AB3 ΔE 0.054
- Twilight #4E518B ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.066
Use #505AAD 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.