#4866CB
Closest named color: Royal Blue (#4169E1). oklch(54.1% 0.16 268.2), rgb(72, 102, 203).
Aa
White text reads best on this color (5.20:1).
About this color
#4866CB is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.160 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.034 away. White text reads best on it, at 5.20:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.03:1 |
| White text | 5.20:1 |
Values
| HEX | #4866CB |
| RGB | rgb(72, 102, 203) |
| HSL | hsl(226, 56%, 54%) |
| OKLCH | oklch(54.1% 0.16 268.2) |
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 #4866CB | 5.20:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #4866CB | 4.03:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #4866CB text on white | 5.20:1 | AA | Lc 75.5 | Fine for body text |
| #4866CB text on black | 4.03:1 | AA large text | Lc -26.3 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F5
oklch(88.6% 0.04 268.5)
-
Step 300
300
#ADC0F0
oklch(81% 0.071 267.9)
-
Step 400
400
#829DE9
oklch(70.6% 0.116 268.4)
-
Step 500
500
#6483E2
oklch(63.1% 0.147 268.4)
-
Step 600
600 (this color)
#4866CB
oklch(54.1% 0.16 268.2)
-
Step 700
700
#3D58B4
oklch(49% 0.149 268.2)
-
Step 800
800
#334992
oklch(42.8% 0.123 268.2)
-
Step 900
900
#2C3D74
oklch(37.6% 0.096 268.5)
-
Step 950
950
#1A2444
oklch(26.9% 0.061 268.9)
#4866CB 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) | #2E73CF | 0.037 |
| Deuteranopia (no green cones) | #0767C9 | 0.043 |
| Tritanopia (no blue cones) | #007D8F | 0.133 |
| Achromatopsia (no color) | #6D6D6D | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4866CB
#4866CB
oklch(54.1% 0.16 268.2)
- #8A6A00
#8A6A00
oklch(54.1% 0.111 87.7)
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 #4866CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.034
- Dark Periwinkle #665FD1 ΔE 0.042
- Warm Blue #4B57DB ΔE 0.045
- Iris #6258C4 ΔE 0.045
- Mid Blue #276AB3 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.051
- French Blue #436BAD ΔE 0.052
- Windows Blue #3778BF ΔE 0.055
Use #4866CB 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.