#4E518B
Named color: Twilight. oklch(46% 0.094 279.8), rgb(78, 81, 139).
Aa
White text reads best on this color (7.30:1).
About this color
#4E518B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.094 and its hue 280°. Its hue sits on the cool side of the wheel. It is the named color Twilight. White text reads best on it, at 7.30:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Twilight |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #4E518B |
| RGB | rgb(78, 81, 139) |
| HSL | hsl(237, 28%, 43%) |
| OKLCH | oklch(46% 0.094 279.8) |
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 #4E518B | 7.30:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #4E518B | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #4E518B text on white | 7.30:1 | AAA | Lc 85.3 | Fine for body text |
| #4E518B text on black | 2.87:1 | Fails | Lc -16.7 | 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
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDE
oklch(80.9% 0.045 279.7)
-
Step 400
400
#979CCE
oklch(70.7% 0.073 279.9)
-
Step 500
500
#7E83C1
oklch(63.1% 0.093 279.8)
-
Step 600
600
#686CAD
oklch(55.6% 0.1 279.9)
-
Step 700
700 (this color)
#4E518B
oklch(46% 0.094 279.8)
-
Step 800
800
#474A79
oklch(42.8% 0.077 279.8)
-
Step 900
900
#3B3E61
oklch(37.7% 0.06 279.4)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#4E518B 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) | #3C598D | 0.030 |
| Deuteranopia (no green cones) | #38548A | 0.030 |
| Tritanopia (no blue cones) | #3B5D67 | 0.082 |
| Achromatopsia (no color) | #565656 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E518B
#4E518B
oklch(46% 0.094 279.8)
- #655805
#655805
oklch(45.9% 0.093 99)
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 #4E518B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.035
- Dusky Blue #475F94 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.045
- Dusty Grape #545775 ΔE 0.045
- Dusk Blue #26538D ΔE 0.048
- YInMn Blue #415A77 ΔE 0.050
- Blueberry #464196 ΔE 0.052
Use #4E518B 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.