#575F90
Closest named color: Dusky Blue (#475F94). oklch(50% 0.079 276.1), rgb(87, 95, 144).
Aa
White text reads best on this color (6.09:1).
About this color
#575F90 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.079 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.022 away. White text reads best on it, at 6.09:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.44:1 |
| White text | 6.09:1 |
Values
| HEX | #575F90 |
| RGB | rgb(87, 95, 144) |
| HSL | hsl(232, 25%, 45%) |
| OKLCH | oklch(50% 0.079 276.1) |
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 #575F90 | 6.09:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #575F90 | 3.44:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #575F90 text on white | 6.09:1 | AA | Lc 80.4 | Fine for body text |
| #575F90 text on black | 3.44:1 | 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
#B9BFDA
oklch(80.9% 0.039 275.6)
-
Step 400
400
#969EC7
oklch(70.7% 0.061 276.1)
-
Step 500
500
#7C86B9
oklch(63.2% 0.078 275.4)
-
Step 600
600
#666FA5
oklch(55.7% 0.085 276.1)
-
Step 700
700 (this color)
#575F90
oklch(50% 0.079 276.1)
-
Step 800
800
#454C73
oklch(42.8% 0.065 275.5)
-
Step 900
900
#3A3F5D
oklch(37.7% 0.052 276.3)
-
Step 950
950
#222536
oklch(27% 0.032 276.3)
#575F90 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) | #4F6492 | 0.016 |
| Deuteranopia (no green cones) | #4B608F | 0.017 |
| Tritanopia (no blue cones) | #466971 | 0.070 |
| Achromatopsia (no color) | #626262 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575F90
#575F90
oklch(50% 0.079 276.1)
- #716329
#716329
oklch(50.1% 0.079 95.8)
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 #575F90, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.022
- Denim #3B638C ΔE 0.037
- Dusk #4E5481 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.040
- Twilight #4E518B ΔE 0.043
- Dusty Grape #545775 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.053
- French Blue #436BAD ΔE 0.053
Use #575F90 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.