#575D9F
Closest named color: Dusky Blue (#475F94). oklch(50.4% 0.104 278), rgb(87, 93, 159).
Aa
White text reads best on this color (6.04:1).
About this color
#575D9F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.104 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.030 away. White text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.47:1 |
| White text | 6.04:1 |
Values
| HEX | #575D9F |
| RGB | rgb(87, 93, 159) |
| HSL | hsl(235, 29%, 48%) |
| OKLCH | oklch(50.4% 0.104 278) |
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 #575D9F | 6.04:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #575D9F | 3.47:1 | AA large text | Lc 23.9 | Dividers and decoration only |
| #575D9F text on white | 6.04:1 | AA | Lc 80.1 | Fine for body text |
| #575D9F text on black | 3.47:1 | AA large text | Lc -21.7 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D4D8EC
oklch(88.5% 0.028 276.8)
-
Step 300
300
#B8BEE2
oklch(80.9% 0.051 277.7)
-
Step 400
400
#949CD3
oklch(70.7% 0.081 277.7)
-
Step 500
500
#7B83C7
oklch(63.1% 0.102 277.9)
-
Step 600
600
#646BB4
oklch(55.5% 0.113 277.9)
-
Step 700
700 (this color)
#575D9F
oklch(50.4% 0.104 278)
-
Step 800
800
#44497E
oklch(42.7% 0.088 277.9)
-
Step 900
900
#393E65
oklch(37.8% 0.067 277.1)
-
Step 950
950
#22243B
oklch(27% 0.043 279.3)
#575D9F 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) | #4565A2 | 0.029 |
| Deuteranopia (no green cones) | #3F609D | 0.031 |
| Tritanopia (no blue cones) | #3F6B76 | 0.093 |
| Achromatopsia (no color) | #636363 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575D9F
#575D9F
oklch(50.4% 0.104 278)
- #746400
#746400
oklch(50.3% 0.104 98.2)
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 #575D9F, closest first.
No curated palette has a color within ΔE 0.04 of #575D9F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.044
- French Blue #436BAD ΔE 0.044
- Twilight #4E518B ΔE 0.046
- Denim #3B638C ΔE 0.052
- Dusk #4E5481 ΔE 0.053
- Mid Blue #276AB3 ΔE 0.060
- Muted Blue #3B719F ΔE 0.062
Use #575D9F 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.