#57648F
Closest named color: Dusky Blue (#475F94). oklch(51% 0.07 270.9), rgb(87, 100, 143).
Aa
White text reads best on this color (5.79:1).
About this color
#57648F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.070 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.029 away. White text reads best on it, at 5.79:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.62:1 |
| White text | 5.79:1 |
Values
| HEX | #57648F |
| RGB | rgb(87, 100, 143) |
| HSL | hsl(226, 24%, 45%) |
| OKLCH | oklch(51% 0.07 270.9) |
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 #57648F | 5.79:1 | AA | Lc -84.2 | Fine for body text |
| Black text on #57648F | 3.62:1 | AA large text | Lc 25.1 | Dividers and decoration only |
| #57648F text on white | 5.79:1 | AA | Lc 78.9 | Fine for body text |
| #57648F text on black | 3.62:1 | AA large text | Lc -22.9 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E6
oklch(88.5% 0.019 269.1)
-
Step 300
300
#B8C0D7
oklch(80.9% 0.034 270.4)
-
Step 400
400
#949FC3
oklch(70.6% 0.054 271.7)
-
Step 500
500
#7A88B4
oklch(63.2% 0.068 270.7)
-
Step 600
600
#6371A0
oklch(55.6% 0.075 271.1)
-
Step 700
700 (this color)
#57648F
oklch(51% 0.07 270.9)
-
Step 800
800
#434D6F
oklch(42.6% 0.058 271.2)
-
Step 900
900
#38405A
oklch(37.6% 0.046 270.9)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#57648F 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) | #566891 | 0.011 |
| Deuteranopia (no green cones) | #51638E | 0.009 |
| Tritanopia (no blue cones) | #466D73 | 0.064 |
| Achromatopsia (no color) | #656565 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57648F
#57648F
oklch(51% 0.07 270.9)
- #756534
#756534
oklch(51.1% 0.071 91.7)
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 #57648F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.029
- Denim #3B638C ΔE 0.036
- Metallic Blue #4F738E ΔE 0.045
- Muted Blue #3B719F ΔE 0.046
- Denim Blue #3B5B92 ΔE 0.048
- Dull Blue #49759C ΔE 0.049
- Slate #516572 ΔE 0.050
- Dusty Grape #545775 ΔE 0.050
Use #57648F 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.