#575B87
Closest named color: Dusk (#4E5481). oklch(48.6% 0.071 279.4), rgb(87, 91, 135).
Aa
White text reads best on this color (6.45:1).
About this color
#575B87 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.071 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.026 away. White text reads best on it, at 6.45:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.25:1 |
| White text | 6.45:1 |
Values
| HEX | #575B87 |
| RGB | rgb(87, 91, 135) |
| HSL | hsl(235, 22%, 44%) |
| OKLCH | oklch(48.6% 0.071 279.4) |
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 #575B87 | 6.45:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #575B87 | 3.25:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #575B87 text on white | 6.45:1 | AA | Lc 82.0 | Fine for body text |
| #575B87 text on black | 3.25:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD7
oklch(80.9% 0.034 278.1)
-
Step 400
400
#999EC3
oklch(70.8% 0.054 278.9)
-
Step 500
500
#8085B4
oklch(63% 0.071 279.4)
-
Step 600
600
#6A6F9F
oklch(55.7% 0.075 279.1)
-
Step 700
700 (this color)
#575B87
oklch(48.6% 0.071 279.4)
-
Step 800
800
#484C6F
oklch(42.8% 0.058 278.6)
-
Step 900
900
#3C3F5A
oklch(37.7% 0.046 279)
-
Step 950
950
#232534
oklch(26.9% 0.028 278.4)
#575B87 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) | #4D6089 | 0.018 |
| Deuteranopia (no green cones) | #4B5D86 | 0.018 |
| Tritanopia (no blue cones) | #4A636B | 0.061 |
| Achromatopsia (no color) | #5E5E5E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575B87
#575B87
oklch(48.6% 0.071 279.4)
- #69602E
#69602E
oklch(48.6% 0.07 99.3)
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 #575B87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.026
- Dusky Blue #475F94 ΔE 0.029
- Dusty Grape #545775 ΔE 0.030
- Twilight #4E518B ΔE 0.035
- Denim #3B638C ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.040
- YInMn Blue #415A77 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.052
Use #575B87 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.