#4B4F8D
Closest named color: Twilight (#4E518B). oklch(45.4% 0.1 278.8), rgb(75, 79, 141).
Aa
White text reads best on this color (7.49:1).
About this color
#4B4F8D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.100 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.009 away. White text reads best on it, at 7.49:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.80:1 |
| White text | 7.49:1 |
Values
| HEX | #4B4F8D |
| RGB | rgb(75, 79, 141) |
| HSL | hsl(236, 31%, 42%) |
| OKLCH | oklch(45.4% 0.1 278.8) |
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 #4B4F8D | 7.49:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #4B4F8D | 2.80:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #4B4F8D text on white | 7.49:1 | AAA | Lc 85.9 | Fine for body text |
| #4B4F8D text on black | 2.80:1 | Fails | Lc -16.1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D7EF
oklch(88.4% 0.033 280)
-
Step 300
300
#B8BDE7
oklch(80.9% 0.059 279.7)
-
Step 400
400
#949BDB
oklch(70.8% 0.094 278.9)
-
Step 500
500
#7A81D1
oklch(63.2% 0.12 278.6)
-
Step 600
600
#6469BE
oklch(55.7% 0.13 278.7)
-
Step 700
700
#5357A4
oklch(49.2% 0.121 278.7)
-
Step 800
800 (this color)
#4B4F8D
oklch(45.4% 0.1 278.8)
-
Step 900
900
#393C6A
oklch(37.6% 0.078 279.1)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#4B4F8D 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) | #37578F | 0.032 |
| Deuteranopia (no green cones) | #32528C | 0.033 |
| Tritanopia (no blue cones) | #345C67 | 0.088 |
| Achromatopsia (no color) | #555555 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4F8D
#4B4F8D
oklch(45.4% 0.1 278.8)
- #645700
#645700
oklch(45.6% 0.094 99.2)
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 #4B4F8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.009
- Dusk #4E5481 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.037
- Blueberry #464196 ΔE 0.044
- Dusk Blue #26538D ΔE 0.044
- Dusky Blue #475F94 ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.049
Use #4B4F8D 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.