#4F549F
Closest named color: Twilight (#4E518B). oklch(47.9% 0.119 278), rgb(79, 84, 159).
Aa
White text reads best on this color (6.77:1).
About this color
#4F549F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.119 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.032 away. White text reads best on it, at 6.77:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.10:1 |
| White text | 6.77:1 |
Values
| HEX | #4F549F |
| RGB | rgb(79, 84, 159) |
| HSL | hsl(236, 34%, 47%) |
| OKLCH | oklch(47.9% 0.119 278) |
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 #4F549F | 6.77:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #4F549F | 3.10:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #4F549F text on white | 6.77:1 | AA | Lc 83.2 | Fine for body text |
| #4F549F text on black | 3.10:1 | AA large text | Lc -18.7 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EF
oklch(88.6% 0.032 277.9)
-
Step 300
300
#B7BEE6
oklch(80.9% 0.057 277.3)
-
Step 400
400
#939BDA
oklch(70.7% 0.092 278.2)
-
Step 500
500
#7981D0
oklch(63.1% 0.119 278)
-
Step 600
600
#6369BD
oklch(55.6% 0.129 278.2)
-
Step 700
700 (this color)
#4F549F
oklch(47.9% 0.119 278)
-
Step 800
800
#434884
oklch(42.7% 0.099 277.8)
-
Step 900
900
#383D6A
oklch(37.8% 0.077 277.3)
-
Step 950
950
#21243E
oklch(27.1% 0.048 277.6)
#4F549F 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) | #345EA2 | 0.039 |
| Deuteranopia (no green cones) | #2D589D | 0.041 |
| Tritanopia (no blue cones) | #306472 | 0.104 |
| Achromatopsia (no color) | #5B5B5B | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F549F
#4F549F
oklch(47.9% 0.119 278)
- #6C5D00
#6C5D00
oklch(47.8% 0.099 98.2)
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 #4F549F, closest first.
No curated palette has a color within ΔE 0.04 of #4F549F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.032
- Dusky Blue #475F94 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.040
- Dusk #4E5481 ΔE 0.049
- Blueberry #464196 ΔE 0.054
- Dusk Blue #26538D ΔE 0.059
- Light Navy Blue #2E5A88 ΔE 0.060
- Denim #3B638C ΔE 0.062
Use #4F549F 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.