#575F8A
Closest named color: Dusky Blue (#475F94). oklch(49.7% 0.069 275.5), rgb(87, 95, 138).
Aa
White text reads best on this color (6.15:1).
About this color
#575F8A is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.069 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.026 away. White text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.40:1 |
| White text | 6.15:1 |
Values
| HEX | #575F8A |
| RGB | rgb(87, 95, 138) |
| HSL | hsl(231, 23%, 44%) |
| OKLCH | oklch(49.7% 0.069 275.5) |
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 #575F8A | 6.15:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #575F8A | 3.40:1 | AA large text | Lc 23.4 | Dividers and decoration only |
| #575F8A text on white | 6.15:1 | AA | Lc 80.7 | Fine for body text |
| #575F8A text on black | 3.40:1 | AA large text | Lc -21.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E6
oklch(88.4% 0.019 276.3)
-
Step 300
300
#BABFD7
oklch(80.8% 0.034 276.3)
-
Step 400
400
#979EC3
oklch(70.7% 0.055 276.5)
-
Step 500
500
#7D86B3
oklch(63% 0.069 275.5)
-
Step 600
600
#67709F
oklch(55.7% 0.074 275.4)
-
Step 700
700 (this color)
#575F8A
oklch(49.7% 0.069 275.5)
-
Step 800
800
#464C6F
oklch(42.6% 0.059 276.2)
-
Step 900
900
#3B405A
oklch(37.8% 0.045 275.6)
-
Step 950
950
#222534
oklch(26.8% 0.028 275.6)
#575F8A 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) | #51648C | 0.015 |
| Deuteranopia (no green cones) | #4E6089 | 0.013 |
| Tritanopia (no blue cones) | #48676E | 0.062 |
| Achromatopsia (no color) | #616161 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575F8A
#575F8A
oklch(49.7% 0.069 275.5)
- #6E6231
#6E6231
oklch(49.6% 0.07 95.9)
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 #575F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.026
- Denim #3B638C ΔE 0.035
- Dusk #4E5481 ΔE 0.037
- Dusty Grape #545775 ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.042
- Twilight #4E518B ΔE 0.045
- YInMn Blue #415A77 ΔE 0.046
- Slate #516572 ΔE 0.049
Use #575F8A 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.