#6571AD
Closest named color: French Blue (#436BAD). oklch(56.4% 0.094 274.4), rgb(101, 113, 173).
Aa
White text reads best on this color (4.64:1).
About this color
#6571AD is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.094 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.047 away. White text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.51:1 |
| White text | 4.64:1 |
Values
| HEX | #6571AD |
| RGB | rgb(101, 113, 173) |
| HSL | hsl(230, 31%, 54%) |
| OKLCH | oklch(56.4% 0.094 274.4) |
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 #6571AD | 4.64:1 | AA | Lc -77.7 | Fine for body text |
| Black text on #6571AD | 4.51:1 | AA | Lc 31.9 | Non-text elements, placeholder text |
| #6571AD text on white | 4.64:1 | AA | Lc 72.2 | Content text, not long reading |
| #6571AD text on black | 4.51:1 | AA | Lc -29.5 | 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
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D4D8E9
oklch(88.4% 0.024 275.3)
-
Step 300
300
#B8BFDD
oklch(80.9% 0.043 275)
-
Step 400
400
#939ECB
oklch(70.7% 0.067 273.9)
-
Step 500
500
#7985BE
oklch(63% 0.087 274.5)
-
Step 600
600 (this color)
#6571AD
oklch(56.4% 0.094 274.4)
-
Step 700
700
#525C92
oklch(49.1% 0.087 274.8)
-
Step 800
800
#434B77
oklch(42.6% 0.074 275)
-
Step 900
900
#383F60
oklch(37.7% 0.057 274.2)
-
Step 950
950
#212538
oklch(27% 0.036 274.6)
#6571AD 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) | #5C78AF | 0.021 |
| Deuteranopia (no green cones) | #5772AC | 0.018 |
| Tritanopia (no blue cones) | #4E7D87 | 0.083 |
| Achromatopsia (no color) | #747474 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6571AD
#6571AD
oklch(56.4% 0.094 274.4)
- #88752C
#88752C
oklch(56.6% 0.095 94.5)
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 #6571AD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.047
- Dull Blue #49759C ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.048
- Stormy Blue #507B9C ΔE 0.051
- Steel Blue #4682B4 ΔE 0.054
- Windows Blue #3778BF ΔE 0.054
- Off Blue #5684AE ΔE 0.054
- Muted Blue #3B719F ΔE 0.055
Use #6571AD 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.