#4E5378
Closest named color: Dusk (#4E5481). oklch(45.4% 0.061 277.8), rgb(78, 83, 120).
Aa
White text reads best on this color (7.41:1).
About this color
#4E5378 is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.061 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.015 away. White text reads best on it, at 7.41:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.83:1 |
| White text | 7.41:1 |
Values
| HEX | #4E5378 |
| RGB | rgb(78, 83, 120) |
| HSL | hsl(233, 21%, 39%) |
| OKLCH | oklch(45.4% 0.061 277.8) |
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 #4E5378 | 7.41:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #4E5378 | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #4E5378 text on white | 7.41:1 | AAA | Lc 85.7 | Fine for body text |
| #4E5378 text on black | 2.83:1 | Fails | Lc -16.3 | 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 800.
-
Step 50
50
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD8
oklch(80.9% 0.035 278.4)
-
Step 400
400
#989EC4
oklch(70.8% 0.056 277.8)
-
Step 500
500
#7F85B5
oklch(63% 0.073 278.6)
-
Step 600
600
#686FA1
oklch(55.6% 0.078 277.4)
-
Step 700
700
#575C8A
oklch(49% 0.074 278.5)
-
Step 800
800 (this color)
#4E5378
oklch(45.4% 0.061 277.8)
-
Step 900
900
#3B3F5B
oklch(37.6% 0.048 277.5)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#4E5378 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) | #48577A | 0.013 |
| Deuteranopia (no green cones) | #455477 | 0.013 |
| Tritanopia (no blue cones) | #435A60 | 0.054 |
| Achromatopsia (no color) | #555555 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E5378
#4E5378
oklch(45.4% 0.061 277.8)
- #5F572D
#5F572D
oklch(45.4% 0.061 98.8)
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 #4E5378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.015
- Dusty Grape #545775 ΔE 0.018
- YInMn Blue #415A77 ΔE 0.027
- Twilight #4E518B ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.050
- Denim #3B638C ΔE 0.052
Use #4E5378 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.