#575F8F
Closest named color: Dusky Blue (#475F94). oklch(49.9% 0.077 276), rgb(87, 95, 143).
Aa
White text reads best on this color (6.10:1).
About this color
#575F8F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.077 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.023 away. White text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.43:1 |
| White text | 6.10:1 |
Values
| HEX | #575F8F |
| RGB | rgb(87, 95, 143) |
| HSL | hsl(231, 24%, 45%) |
| OKLCH | oklch(49.9% 0.077 276) |
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 #575F8F | 6.10:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #575F8F | 3.43:1 | AA large text | Lc 23.6 | Dividers and decoration only |
| #575F8F text on white | 6.10:1 | AA | Lc 80.4 | Fine for body text |
| #575F8F text on black | 3.43:1 | AA large text | Lc -21.4 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D5D8E7
oklch(88.4% 0.021 276.9)
-
Step 300
300
#BABFD9
oklch(80.9% 0.037 276.9)
-
Step 400
400
#969EC6
oklch(70.7% 0.059 276)
-
Step 500
500
#7D86B8
oklch(63.2% 0.076 276.1)
-
Step 600
600
#666FA4
oklch(55.6% 0.083 276)
-
Step 700
700 (this color)
#575F8F
oklch(49.9% 0.077 276)
-
Step 800
800
#454C72
oklch(42.7% 0.064 275.4)
-
Step 900
900
#3A3F5C
oklch(37.6% 0.05 276.2)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#575F8F 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) | #4F6491 | 0.016 |
| Deuteranopia (no green cones) | #4B608E | 0.017 |
| Tritanopia (no blue cones) | #466870 | 0.069 |
| Achromatopsia (no color) | #626262 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575F8F
#575F8F
oklch(49.9% 0.077 276)
- #70632B
#70632B
oklch(50% 0.077 96.4)
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 #575F8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.023
- Denim #3B638C ΔE 0.037
- Dusk #4E5481 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.040
- Twilight #4E518B ΔE 0.043
- Dusty Grape #545775 ΔE 0.044
- YInMn Blue #415A77 ΔE 0.052
- French Blue #436BAD ΔE 0.054
Use #575F8F 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.