#4F528A
Closest named color: Twilight (#4E518B). oklch(46.2% 0.09 279.9), rgb(79, 82, 138).
Aa
White text reads best on this color (7.22:1).
About this color
#4F528A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.090 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.004 away. White text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #4F528A |
| RGB | rgb(79, 82, 138) |
| HSL | hsl(237, 27%, 43%) |
| OKLCH | oklch(46.2% 0.09 279.9) |
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 #4F528A | 7.22:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #4F528A | 2.90:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #4F528A text on white | 7.22:1 | AAA | Lc 85.0 | Fine for body text |
| #4F528A text on black | 2.90:1 | Fails | Lc -17.0 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E8E9F2
oklch(93.6% 0.012 281.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#BABEDD
oklch(80.8% 0.044 279.6)
-
Step 400
400
#979CCC
oklch(70.6% 0.07 279.8)
-
Step 500
500
#7F83BF
oklch(63.1% 0.09 280.5)
-
Step 600
600
#686CAB
oklch(55.5% 0.097 279.9)
-
Step 700
700 (this color)
#4F528A
oklch(46.2% 0.09 279.9)
-
Step 800
800
#474A77
oklch(42.7% 0.074 279.8)
-
Step 900
900
#3B3E60
oklch(37.7% 0.058 279.3)
-
Step 950
950
#232438
oklch(26.9% 0.037 281.4)
#4F528A 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) | #3E598C | 0.028 |
| Deuteranopia (no green cones) | #3B5589 | 0.028 |
| Tritanopia (no blue cones) | #3D5D67 | 0.079 |
| Achromatopsia (no color) | #575757 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F528A
#4F528A
oklch(46.2% 0.09 279.9)
- #65590E
#65590E
oklch(46.2% 0.09 99.4)
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 #4F528A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.004
- Dusk #4E5481 ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.034
- Dusky Blue #475F94 ΔE 0.037
- Dusty Grape #545775 ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
Use #4F528A 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.