#5570AB
Closest named color: French Blue (#436BAD). oklch(55% 0.098 264.7), rgb(85, 112, 171).
Aa
White text reads best on this color (4.89:1).
About this color
#5570AB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.098 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.027 away. White text reads best on it, at 4.89:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.29:1 |
| White text | 4.89:1 |
Values
| HEX | #5570AB |
| RGB | rgb(85, 112, 171) |
| HSL | hsl(221, 34%, 50%) |
| OKLCH | oklch(55% 0.098 264.7) |
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 #5570AB | 4.89:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #5570AB | 4.29:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #5570AB text on white | 4.89:1 | AA | Lc 73.8 | Content text, not long reading |
| #5570AB text on black | 4.29:1 | AA large text | Lc -27.9 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DE
oklch(81% 0.044 264.9)
-
Step 400
400
#8BA0CD
oklch(70.6% 0.07 265.2)
-
Step 500
500
#6E89C0
oklch(63.2% 0.089 263.9)
-
Step 600
600 (this color)
#5570AB
oklch(55% 0.098 264.7)
-
Step 700
700
#475F94
oklch(49.1% 0.09 264.8)
-
Step 800
800
#3A4E78
oklch(42.7% 0.075 264.1)
-
Step 900
900
#324161
oklch(37.7% 0.059 264.6)
-
Step 950
950
#1D2639
oklch(27% 0.038 264.5)
#5570AB 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) | #5975AD | 0.015 |
| Deuteranopia (no green cones) | #506DAA | 0.011 |
| Tritanopia (no blue cones) | #2F7D85 | 0.089 |
| Achromatopsia (no color) | #717171 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5570AB
#5570AB
oklch(55% 0.098 264.7)
- #8C6C22
#8C6C22
oklch(54.9% 0.098 84.4)
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 #5570AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.027
- Flat Blue #3C73A8 ΔE 0.028
- Dull Blue #49759C ΔE 0.034
- Muted Blue #3B719F ΔE 0.036
- Windows Blue #3778BF ΔE 0.041
- Stormy Blue #507B9C ΔE 0.045
- Cerulean #457B9D ΔE 0.046
- Steel Blue #4682B4 ΔE 0.050
Use #5570AB 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.