#4F528D
Closest named color: Twilight (#4E518B). oklch(46.4% 0.095 279.8), rgb(79, 82, 141).
Aa
White text reads best on this color (7.18:1).
About this color
#4F528D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.095 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 7.18:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #4F528D |
| RGB | rgb(79, 82, 141) |
| HSL | hsl(237, 28%, 43%) |
| OKLCH | oklch(46.4% 0.095 279.8) |
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 #4F528D | 7.18:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #4F528D | 2.92:1 | Fails | Lc 19.2 | Dividers and decoration only |
| #4F528D text on white | 7.18:1 | AAA | Lc 84.8 | Fine for body text |
| #4F528D text on black | 2.92:1 | Fails | Lc -17.2 | 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
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#BABEDF
oklch(80.9% 0.047 279.8)
-
Step 400
400
#979CCE
oklch(70.7% 0.073 279.9)
-
Step 500
500
#7E83C2
oklch(63.1% 0.095 279.8)
-
Step 600
600
#686CAE
oklch(55.7% 0.102 279.9)
-
Step 700
700 (this color)
#4F528D
oklch(46.4% 0.095 279.8)
-
Step 800
800
#474A79
oklch(42.8% 0.077 279.8)
-
Step 900
900
#3B3E62
oklch(37.8% 0.061 279.4)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#4F528D 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) | #3D5A8F | 0.030 |
| Deuteranopia (no green cones) | #39558C | 0.030 |
| Tritanopia (no blue cones) | #3B5E68 | 0.084 |
| Achromatopsia (no color) | #575757 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F528D
#4F528D
oklch(46.4% 0.095 279.8)
- #665A03
#665A03
oklch(46.5% 0.096 100.2)
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 #4F528D, 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 0.022
- Denim Blue #3B5B92 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusty Grape #545775 ΔE 0.046
- Dusk Blue #26538D ΔE 0.049
- YInMn Blue #415A77 ΔE 0.052
Use #4F528D 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.