#4F64BF
Closest named color: Iris (#6258C4). oklch(53.3% 0.144 271), rgb(79, 100, 191).
Aa
White text reads best on this color (5.37:1).
About this color
#4F64BF is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.144 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.039 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.144) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #4F64BF |
| RGB | rgb(79, 100, 191) |
| HSL | hsl(229, 47%, 53%) |
| OKLCH | oklch(53.3% 0.144 271) |
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 #4F64BF | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #4F64BF | 3.90:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #4F64BF text on white | 5.37:1 | AA | Lc 76.5 | Fine for body text |
| #4F64BF text on black | 3.90:1 | AA large text | Lc -25.2 | 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 600.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D0D8F2
oklch(88.4% 0.037 272)
-
Step 300
300
#B1BFEB
oklch(80.9% 0.064 271.1)
-
Step 400
400
#899DE2
oklch(70.8% 0.104 271.2)
-
Step 500
500
#6C83D9
oklch(63.1% 0.132 270.9)
-
Step 600
600 (this color)
#4F64BF
oklch(53.3% 0.144 271)
-
Step 700
700
#4659AC
oklch(49.2% 0.134 271.1)
-
Step 800
800
#39498B
oklch(42.7% 0.111 270.8)
-
Step 900
900
#313E6F
oklch(37.8% 0.085 270.7)
-
Step 950
950
#1D2441
oklch(26.9% 0.055 272)
#4F64BF 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) | #3870C2 | 0.036 |
| Deuteranopia (no green cones) | #2666BD | 0.039 |
| Tritanopia (no blue cones) | #007888 | 0.126 |
| Achromatopsia (no color) | #6A6A6A | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F64BF
#4F64BF
oklch(53.3% 0.144 271)
- #846900
#846900
oklch(53.2% 0.109 91)
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 #4F64BF, closest first.
No curated palette has a color within ΔE 0.04 of #4F64BF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.039
- French Blue #436BAD ΔE 0.039
- Dark Periwinkle #665FD1 ΔE 0.044
- Mid Blue #276AB3 ΔE 0.046
- Slate Blue #6A5ACD ΔE 0.049
- Royal Blue #4169E1 ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.054
- Windows Blue #3778BF ΔE 0.056
Use #4F64BF 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.