#4263C6
Closest named color: Royal Blue (#4169E1). oklch(52.9% 0.159 267), rgb(66, 99, 198).
Aa
White text reads best on this color (5.48:1).
About this color
#4263C6 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.159 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.043 away. White text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.83:1 |
| White text | 5.48:1 |
Values
| HEX | #4263C6 |
| RGB | rgb(66, 99, 198) |
| HSL | hsl(225, 54%, 52%) |
| OKLCH | oklch(52.9% 0.159 267) |
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 #4263C6 | 5.48:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #4263C6 | 3.83:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #4263C6 text on white | 5.48:1 | AA | Lc 77.0 | Fine for body text |
| #4263C6 text on black | 3.83:1 | AA large text | Lc -24.7 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ACC0F0
oklch(80.9% 0.072 267.1)
-
Step 400
400
#809EE8
oklch(70.7% 0.114 266.7)
-
Step 500
500
#6284E1
oklch(63.1% 0.145 267.1)
-
Step 600
600 (this color)
#4263C6
oklch(52.9% 0.159 267)
-
Step 700
700
#3B59B3
oklch(49.1% 0.147 267)
-
Step 800
800
#314991
oklch(42.7% 0.122 267.2)
-
Step 900
900
#2B3E74
oklch(37.8% 0.095 267.2)
-
Step 950
950
#192544
oklch(27.1% 0.06 266.5)
#4263C6 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) | #2B6FCA | 0.033 |
| Deuteranopia (no green cones) | #0063C4 | 0.040 |
| Tritanopia (no blue cones) | #007A8B | 0.131 |
| Achromatopsia (no color) | #696969 | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4263C6
#4263C6
oklch(52.9% 0.159 267)
- #866600
#866600
oklch(52.8% 0.108 87)
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 #4263C6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.043
- Mid Blue #276AB3 ΔE 0.044
- Warm Blue #4B57DB ΔE 0.045
- Iris #6258C4 ΔE 0.046
- French Blue #436BAD ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.050
- Slate Blue #6A5ACD ΔE 0.057
- Windows Blue #3778BF ΔE 0.059
Use #4263C6 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.