#4F539A
Closest named color: Twilight (#4E518B). oklch(47.4% 0.113 278.7), rgb(79, 83, 154).
Aa
White text reads best on this color (6.91:1).
About this color
#4F539A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.113 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.024 away. White text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #4F539A |
| RGB | rgb(79, 83, 154) |
| HSL | hsl(237, 32%, 46%) |
| OKLCH | oklch(47.4% 0.113 278.7) |
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 #4F539A | 6.91:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #4F539A | 3.03:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #4F539A text on white | 6.91:1 | AA | Lc 83.8 | Fine for body text |
| #4F539A text on black | 3.03:1 | AA large text | Lc -18.2 | 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
#E7E9F5
oklch(93.6% 0.016 278.5)
-
Step 200
200
#D4D8EE
oklch(88.6% 0.03 277.6)
-
Step 300
300
#B8BEE4
oklch(80.9% 0.054 278.1)
-
Step 400
400
#949BD7
oklch(70.6% 0.088 278.7)
-
Step 500
500
#7B82CC
oklch(63.2% 0.111 278.6)
-
Step 600
600
#656AB9
oklch(55.7% 0.121 278.9)
-
Step 700
700 (this color)
#4F539A
oklch(47.4% 0.113 278.7)
-
Step 800
800
#444881
oklch(42.6% 0.094 278.6)
-
Step 900
900
#393D68
oklch(37.7% 0.073 278.2)
-
Step 950
950
#21243D
oklch(27% 0.047 277.6)
#4F539A 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) | #365D9D | 0.038 |
| Deuteranopia (no green cones) | #305798 | 0.039 |
| Tritanopia (no blue cones) | #34626F | 0.099 |
| Achromatopsia (no color) | #5A5A5A | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F539A
#4F539A
oklch(47.4% 0.113 278.7)
- #6A5C00
#6A5C00
oklch(47.4% 0.098 98.9)
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 #4F539A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.037
- Dusky Blue #475F94 ΔE 0.037
- Dusk #4E5481 ΔE 0.042
- Blueberry #464196 ΔE 0.051
- Dusk Blue #26538D ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.055
- Denim #3B638C ΔE 0.059
Use #4F539A 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.