#4B509C
Closest named color: Twilight (#4E518B). oklch(46.6% 0.121 277.8), rgb(75, 80, 156).
Aa
White text reads best on this color (7.17:1).
About this color
#4B509C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.121 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.029 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #4B509C |
| RGB | rgb(75, 80, 156) |
| HSL | hsl(236, 35%, 45%) |
| OKLCH | oklch(46.6% 0.121 277.8) |
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 #4B509C | 7.17:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #4B509C | 2.92:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #4B509C text on white | 7.17:1 | AAA | Lc 84.7 | Fine for body text |
| #4B509C text on black | 2.92:1 | Fails | Lc -17.3 | 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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B7BEE7
oklch(81% 0.058 277.4)
-
Step 400
400
#929BDB
oklch(70.7% 0.094 277.5)
-
Step 500
500
#7981D1
oklch(63.1% 0.12 278)
-
Step 600
600
#6269BE
oklch(55.5% 0.131 277.7)
-
Step 700
700 (this color)
#4B509C
oklch(46.6% 0.121 277.8)
-
Step 800
800
#434885
oklch(42.8% 0.1 277.7)
-
Step 900
900
#383C6A
oklch(37.6% 0.078 278.2)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#4B509C 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) | #2E5B9F | 0.041 |
| Deuteranopia (no green cones) | #26549A | 0.043 |
| Tritanopia (no blue cones) | #2A606E | 0.106 |
| Achromatopsia (no color) | #575757 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B509C
#4B509C
oklch(46.6% 0.121 277.8)
- #685900
#685900
oklch(46.5% 0.096 97.8)
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 #4B509C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.041
- Blueberry #464196 ΔE 0.041
- Dusky Blue #475F94 ΔE 0.046
- Dusk #4E5481 ΔE 0.048
- Dusk Blue #26538D ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.058
Use #4B509C 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.