#575DA9
Closest named color: French Blue (#436BAD). oklch(51% 0.119 277.9), rgb(87, 93, 169).
Aa
White text reads best on this color (5.92:1).
About this color
#575DA9 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.119 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.042 away. White text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.54:1 |
| White text | 5.92:1 |
Values
| HEX | #575DA9 |
| RGB | rgb(87, 93, 169) |
| HSL | hsl(236, 32%, 50%) |
| OKLCH | oklch(51% 0.119 277.9) |
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 #575DA9 | 5.92:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #575DA9 | 3.54:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #575DA9 text on white | 5.92:1 | AA | Lc 79.5 | Fine for body text |
| #575DA9 text on black | 3.54:1 | AA large text | Lc -22.3 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EF
oklch(88.6% 0.032 277.9)
-
Step 300
300
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#939BDA
oklch(70.7% 0.092 278.2)
-
Step 500
500
#7981D0
oklch(63.1% 0.119 278)
-
Step 600
600
#6369BD
oklch(55.6% 0.129 278.2)
-
Step 700
700 (this color)
#575DA9
oklch(51% 0.119 277.9)
-
Step 800
800
#434884
oklch(42.7% 0.099 277.8)
-
Step 900
900
#383D6A
oklch(37.8% 0.077 277.3)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#575DA9 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) | #3E67AC | 0.037 |
| Deuteranopia (no green cones) | #3761A7 | 0.039 |
| Tritanopia (no blue cones) | #396D7B | 0.104 |
| Achromatopsia (no color) | #646464 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575DA9
#575DA9
oklch(51% 0.119 277.9)
- #776600
#776600
oklch(51.1% 0.106 97.7)
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 #575DA9, closest first.
No curated palette has a color within ΔE 0.04 of #575DA9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.042
- Dusky Blue #475F94 ΔE 0.042
- Iris #6258C4 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.054
- Mid Blue #276AB3 ΔE 0.056
- Twilight #4E518B ΔE 0.057
- Denim #3B638C ΔE 0.064
- Slate Blue #6A5ACD ΔE 0.065
Use #575DA9 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.