#6572D0
Closest named color: Dark Periwinkle (#665FD1). oklch(58.6% 0.143 275.2), rgb(101, 114, 208).
Aa
Black text reads best on this color (4.87:1).
About this color
#6572D0 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.143 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.048 away. Black text reads best on it, at 4.87:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.87:1 |
| White text | 4.31:1 |
Values
| HEX | #6572D0 |
| RGB | rgb(101, 114, 208) |
| HSL | hsl(233, 53%, 61%) |
| OKLCH | oklch(58.6% 0.143 275.2) |
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 #6572D0 | 4.31:1 | AA large text | Lc -75.1 | Fine for body text |
| Black text on #6572D0 | 4.87:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #6572D0 text on white | 4.31:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #6572D0 text on black | 4.87:1 | AA | Lc -32.0 | Non-text elements, placeholder text |
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
#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
#B4BEEB
oklch(80.9% 0.065 275.1)
-
Step 400
400
#8E9BE1
oklch(70.7% 0.104 275.4)
-
Step 500
500
#7381D8
oklch(63.1% 0.131 275.1)
-
Step 600
600 (this color)
#6572D0
oklch(58.6% 0.143 275.2)
-
Step 700
700
#4C57AB
oklch(49.1% 0.133 274.8)
-
Step 800
800
#3F478A
oklch(42.6% 0.11 275.6)
-
Step 900
900
#353C6F
oklch(37.7% 0.087 275.5)
-
Step 950
950
#1F2441
oklch(27.1% 0.054 274.8)
#6572D0 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) | #4A7ED4 | 0.040 |
| Deuteranopia (no green cones) | #3E75CE | 0.043 |
| Tritanopia (no blue cones) | #378697 | 0.126 |
| Achromatopsia (no color) | #7A7A7A | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6572D0
#6572D0
oklch(58.6% 0.143 275.2)
- #937A00
#937A00
oklch(58.6% 0.12 94.6)
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 #6572D0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.048
- Royal Blue #4169E1 ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.059
- Windows Blue #3778BF ΔE 0.059
- Cornflower #6A79F7 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.061
- Soft Blue #6488EA ΔE 0.064
Use #6572D0 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.