#4263C1
Closest named color: Mid Blue (#276AB3). oklch(52.5% 0.152 266.6), rgb(66, 99, 193).
Aa
White text reads best on this color (5.54:1).
About this color
#4263C1 is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.152 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.038 away. White text reads best on it, at 5.54:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.152) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.78:1 |
| White text | 5.54:1 |
Values
| HEX | #4263C1 |
| RGB | rgb(66, 99, 193) |
| HSL | hsl(224, 51%, 51%) |
| OKLCH | oklch(52.5% 0.152 266.6) |
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 #4263C1 | 5.54:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #4263C1 | 3.78:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #4263C1 text on white | 5.54:1 | AA | Lc 77.4 | Fine for body text |
| #4263C1 text on black | 3.78:1 | AA large text | Lc -24.4 | 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
#CED9F3
oklch(88.5% 0.038 267.3)
-
Step 300
300
#ACC0EE
oklch(80.9% 0.069 266.5)
-
Step 400
400
#819EE5
oklch(70.6% 0.11 266.7)
-
Step 500
500
#6385DE
oklch(63.2% 0.14 266.7)
-
Step 600
600 (this color)
#4263C1
oklch(52.5% 0.152 266.6)
-
Step 700
700
#3C5AB0
oklch(49.1% 0.141 266.7)
-
Step 800
800
#314A8E
oklch(42.7% 0.116 266.4)
-
Step 900
900
#2B3E72
oklch(37.6% 0.092 266.9)
-
Step 950
950
#192543
oklch(27% 0.058 266.1)
#4263C1 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) | #316EC4 | 0.030 |
| Deuteranopia (no green cones) | #1263BF | 0.036 |
| Tritanopia (no blue cones) | #007989 | 0.126 |
| Achromatopsia (no color) | #686868 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4263C1
#4263C1
oklch(52.5% 0.152 266.6)
- #856500
#856500
oklch(52.5% 0.107 86.8)
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 #4263C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.038
- French Blue #436BAD ΔE 0.041
- Iris #6258C4 ΔE 0.047
- Royal Blue #4169E1 ΔE 0.050
- Warm Blue #4B57DB ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.054
- Windows Blue #3778BF ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.059
Use #4263C1 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.