#4B559B
Closest named color: Twilight (#4E518B). oklch(47.6% 0.113 275.2), rgb(75, 85, 155).
Aa
White text reads best on this color (6.83:1).
About this color
#4B559B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.113 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.026 away. White text reads best on it, at 6.83:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.07:1 |
| White text | 6.83:1 |
Values
| HEX | #4B559B |
| RGB | rgb(75, 85, 155) |
| HSL | hsl(233, 35%, 45%) |
| OKLCH | oklch(47.6% 0.113 275.2) |
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 #4B559B | 6.83:1 | AA | Lc -88.5 | Fine for body text |
| Black text on #4B559B | 3.07:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #4B559B text on white | 6.83:1 | AA | Lc 83.5 | Fine for body text |
| #4B559B text on black | 3.07:1 | AA large text | Lc -18.5 | 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
#E6E9F5
oklch(93.5% 0.016 274.8)
-
Step 200
200
#D3D8EE
oklch(88.5% 0.031 275.6)
-
Step 300
300
#B6BEE5
oklch(80.8% 0.056 276)
-
Step 400
400
#919CD7
oklch(70.6% 0.087 275.8)
-
Step 500
500
#7683CD
oklch(63.1% 0.112 275.1)
-
Step 600
600
#606CB9
oklch(55.7% 0.12 275.1)
-
Step 700
700 (this color)
#4B559B
oklch(47.6% 0.113 275.2)
-
Step 800
800
#414982
oklch(42.7% 0.095 275.6)
-
Step 900
900
#373E68
oklch(37.8% 0.072 275.2)
-
Step 950
950
#20243D
oklch(26.9% 0.047 275.9)
#4B559B 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) | #385E9E | 0.031 |
| Deuteranopia (no green cones) | #305799 | 0.033 |
| Tritanopia (no blue cones) | #2A6470 | 0.100 |
| Achromatopsia (no color) | #5B5B5B | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B559B
#4B559B
oklch(47.6% 0.113 275.2)
- #6E5B00
#6E5B00
oklch(47.6% 0.098 94.8)
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 #4B559B, closest first.
No curated palette has a color within ΔE 0.04 of #4B559B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.033
- Dusk #4E5481 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.051
- Dusk Blue #26538D ΔE 0.051
- Denim #3B638C ΔE 0.054
- Blueberry #464196 ΔE 0.054
Use #4B559B 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.