#575DAA
Closest named color: French Blue (#436BAD). oklch(51.1% 0.121 277.8), rgb(87, 93, 170).
Aa
White text reads best on this color (5.91:1).
About this color
#575DAA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.121 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 5.91:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.55:1 |
| White text | 5.91:1 |
Values
| HEX | #575DAA |
| RGB | rgb(87, 93, 170) |
| HSL | hsl(236, 33%, 50%) |
| OKLCH | oklch(51.1% 0.121 277.8) |
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 #575DAA | 5.91:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #575DAA | 3.55:1 | AA large text | Lc 24.6 | Dividers and decoration only |
| #575DAA text on white | 5.91:1 | AA | Lc 79.4 | Fine for body text |
| #575DAA text on black | 3.55:1 | AA large text | Lc -22.4 | 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
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B7BEE7
oklch(81% 0.058 277.4)
-
Step 400
400
#929BDB
oklch(70.7% 0.094 277.5)
-
Step 500
500
#7981D1
oklch(63.1% 0.12 278)
-
Step 600
600
#6269BE
oklch(55.5% 0.131 277.7)
-
Step 700
700 (this color)
#575DAA
oklch(51.1% 0.121 277.8)
-
Step 800
800
#434885
oklch(42.8% 0.1 277.7)
-
Step 900
900
#383C6A
oklch(37.6% 0.078 278.2)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#575DAA 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) | #3D67AD | 0.038 |
| Deuteranopia (no green cones) | #3761A8 | 0.039 |
| Tritanopia (no blue cones) | #386D7B | 0.106 |
| Achromatopsia (no color) | #646464 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575DAA
#575DAA
oklch(51.1% 0.121 277.8)
- #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 #575DAA, closest first.
No curated palette has a color within ΔE 0.04 of #575DAA.
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 0.044
- Iris #6258C4 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.055
- Mid Blue #276AB3 ΔE 0.056
- Twilight #4E518B ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.065
Use #575DAA 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.