#4B4F71
Closest named color: Dusk (#4E5481). oklch(43.9% 0.056 278.6), rgb(75, 79, 113).
Aa
White text reads best on this color (7.90:1).
About this color
#4B4F71 is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.056 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.028 away. White text reads best on it, at 7.90:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.056) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #4B4F71 |
| RGB | rgb(75, 79, 113) |
| HSL | hsl(234, 20%, 37%) |
| OKLCH | oklch(43.9% 0.056 278.6) |
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 #4B4F71 | 7.90:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #4B4F71 | 2.65:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #4B4F71 text on white | 7.90:1 | AAA | Lc 87.4 | Fine for body text |
| #4B4F71 text on black | 2.65:1 | Fails | Lc -14.7 | Not readable |
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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E5
oklch(88.5% 0.018 279)
-
Step 300
300
#BBBFD6
oklch(80.9% 0.033 277.8)
-
Step 400
400
#999EC2
oklch(70.8% 0.053 278.8)
-
Step 500
500
#8086B2
oklch(63.2% 0.066 278.3)
-
Step 600
600
#6A6F9E
oklch(55.6% 0.073 279.1)
-
Step 700
700
#585D87
oklch(49.2% 0.067 278.4)
-
Step 800
800 (this color)
#4B4F71
oklch(43.9% 0.056 278.6)
-
Step 900
900
#3C3F59
oklch(37.6% 0.045 278.9)
-
Step 950
950
#232534
oklch(26.9% 0.028 278.4)
#4B4F71 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) | #455372 | 0.014 |
| Deuteranopia (no green cones) | #435070 | 0.012 |
| Tritanopia (no blue cones) | #41555B | 0.049 |
| Achromatopsia (no color) | #515151 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B4F71
#4B4F71
oklch(43.9% 0.056 278.6)
- #5A532D
#5A532D
oklch(43.9% 0.056 99.1)
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 #4B4F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.028
- Dusty Grape #545775 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.033
- Twilight #4E518B ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.059
- Dusk Blue #26538D ΔE 0.060
- Light Navy #155084 ΔE 0.064
Use #4B4F71 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.