#6570AF
Closest named color: French Blue (#436BAD). oklch(56.3% 0.098 275.3), rgb(101, 112, 175).
Aa
White text reads best on this color (4.67:1).
About this color
#6570AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.098 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.046 away. White text reads best on it, at 4.67:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.49:1 |
| White text | 4.67:1 |
Values
| HEX | #6570AF |
| RGB | rgb(101, 112, 175) |
| HSL | hsl(231, 32%, 54%) |
| OKLCH | oklch(56.3% 0.098 275.3) |
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 #6570AF | 4.67:1 | AA | Lc -77.9 | Fine for body text |
| Black text on #6570AF | 4.49:1 | AA large text | Lc 31.7 | Non-text elements, placeholder text |
| #6570AF text on white | 4.67:1 | AA | Lc 72.4 | Content text, not long reading |
| #6570AF text on black | 4.49:1 | AA large text | Lc -29.3 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EA
oklch(88.5% 0.025 275.9)
-
Step 300
300
#B8BFDE
oklch(80.9% 0.044 275.3)
-
Step 400
400
#939ECD
oklch(70.8% 0.07 274.3)
-
Step 500
500
#7A85C0
oklch(63.1% 0.09 275.4)
-
Step 600
600 (this color)
#6570AF
oklch(56.3% 0.098 275.3)
-
Step 700
700
#525C94
oklch(49.2% 0.09 274.9)
-
Step 800
800
#434B78
oklch(42.7% 0.075 275.1)
-
Step 900
900
#393F61
oklch(37.8% 0.059 275.6)
-
Step 950
950
#212539
oklch(27% 0.038 274.9)
#6570AF 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) | #5A77B2 | 0.022 |
| Deuteranopia (no green cones) | #5471AE | 0.022 |
| Tritanopia (no blue cones) | #4D7D87 | 0.088 |
| Achromatopsia (no color) | #747474 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6570AF
#6570AF
oklch(56.3% 0.098 275.3)
- #877527
#877527
oklch(56.4% 0.099 96)
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 #6570AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.050
- Dull Blue #49759C ΔE 0.051
- Windows Blue #3778BF ΔE 0.053
- Stormy Blue #507B9C ΔE 0.055
- Steel Blue #4682B4 ΔE 0.056
- Muted Blue #3B719F ΔE 0.057
- Off Blue #5684AE ΔE 0.058
Use #6570AF 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.