#564FCF
Closest named color: Warm Blue (#4B57DB). oklch(51.1% 0.191 279.6), rgb(86, 79, 207).
Aa
White text reads best on this color (6.14:1).
About this color
#564FCF is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.191 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.028 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #564FCF |
| RGB | rgb(86, 79, 207) |
| HSL | hsl(243, 57%, 56%) |
| OKLCH | oklch(51.1% 0.191 279.6) |
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 #564FCF | 6.14:1 | AA | Lc -85.4 | Fine for body text |
| Black text on #564FCF | 3.41:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #564FCF text on white | 6.14:1 | AA | Lc 80.2 | Fine for body text |
| #564FCF text on black | 3.41:1 | AA large text | Lc -21.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D2D6FB
oklch(88.5% 0.051 280.4)
-
Step 300
300
#B4BBFC
oklch(81% 0.092 279.4)
-
Step 400
400
#8F94FA
oklch(70.6% 0.148 279.8)
-
Step 500
500
#7676F8
oklch(63.2% 0.189 279.5)
-
Step 600
600
#615AE6
oklch(55.5% 0.205 279.6)
-
Step 700
700 (this color)
#564FCF
oklch(51.1% 0.191 279.6)
-
Step 800
800
#423DA2
oklch(42.7% 0.158 279.6)
-
Step 900
900
#373580
oklch(37.6% 0.123 279.9)
-
Step 950
950
#20204B
oklch(27% 0.078 279.9)
#564FCF 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) | #0066D3 | 0.077 |
| Deuteranopia (no green cones) | #005CCC | 0.071 |
| Tritanopia (no blue cones) | #006F87 | 0.166 |
| Achromatopsia (no color) | #616161 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #564FCF
#564FCF
oklch(51.1% 0.191 279.6)
- #756700
#756700
oklch(51.1% 0.106 100)
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 #564FCF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.028
- Iris #6258C4 ΔE 0.035
- Bluey Purple #6241C7 ΔE 0.035
- Slate Blue #6A5ACD ΔE 0.043
- Blue With A Hint Of Purple #533CC6 ΔE 0.043
- Blurple #5539CC ΔE 0.045
- Light Indigo #6D5ACF ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.047
Use #564FCF 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.