#565FCC
Closest named color: Dark Periwinkle (#665FD1). oklch(53.7% 0.167 275.7), rgb(86, 95, 204).
Aa
White text reads best on this color (5.37:1).
About this color
#565FCC is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.167 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.024 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #565FCC |
| RGB | rgb(86, 95, 204) |
| HSL | hsl(235, 54%, 57%) |
| OKLCH | oklch(53.7% 0.167 275.7) |
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 #565FCC | 5.37:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #565FCC | 3.90:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #565FCC text on white | 5.37:1 | AA | Lc 76.5 | Fine for body text |
| #565FCC text on black | 3.90:1 | AA large text | Lc -25.3 | 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 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D1D7F5
oklch(88.4% 0.042 276.6)
-
Step 300
300
#B3BDF2
oklch(80.9% 0.076 276.3)
-
Step 400
400
#8C99EB
oklch(70.6% 0.121 276)
-
Step 500
500
#717EE5
oklch(63.1% 0.154 275.7)
-
Step 600
600 (this color)
#565FCC
oklch(53.7% 0.167 275.7)
-
Step 700
700
#4B53B6
oklch(49% 0.155 275.6)
-
Step 800
800
#3E4594
oklch(42.9% 0.128 275.8)
-
Step 900
900
#343B76
oklch(37.8% 0.1 275.5)
-
Step 950
950
#1E2345
oklch(27.1% 0.063 275.1)
#565FCC 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) | #1B70D0 | 0.061 |
| Deuteranopia (no green cones) | #0066CA | 0.062 |
| Tritanopia (no blue cones) | #00788C | 0.147 |
| Achromatopsia (no color) | #6A6A6A | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #565FCC
#565FCC
oklch(53.7% 0.167 275.7)
- #816C00
#816C00
oklch(53.6% 0.11 95.5)
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 #565FCC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.024
- Iris #6258C4 ΔE 0.025
- Slate Blue #6A5ACD ΔE 0.030
- Light Indigo #6D5ACF ΔE 0.035
- Warm Blue #4B57DB ΔE 0.035
- Royal Blue #4169E1 ΔE 0.043
- Neon Blue #4361EE ΔE 0.056
- French Blue #436BAD ΔE 0.065
Use #565FCC 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.