#4063D7
Closest named color: Royal Blue (#4169E1). oklch(54% 0.182 267.3), rgb(64, 99, 215).
Aa
White text reads best on this color (5.27:1).
About this color
#4063D7 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.182 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.021 away. White text reads best on it, at 5.27:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.182) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 3.98:1 |
| White text | 5.27:1 |
Values
| HEX | #4063D7 |
| RGB | rgb(64, 99, 215) |
| HSL | hsl(226, 65%, 55%) |
| OKLCH | oklch(54% 0.182 267.3) |
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 #4063D7 | 5.27:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #4063D7 | 3.98:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #4063D7 text on white | 5.27:1 | AA | Lc 75.8 | Fine for body text |
| #4063D7 text on black | 3.98:1 | AA large text | Lc -26.0 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F8
oklch(88.5% 0.045 267.4)
-
Step 300
300
#A9C0F7
oklch(81% 0.082 266.9)
-
Step 400
400
#7C9DF3
oklch(70.8% 0.132 267.1)
-
Step 500
500
#5C81EE
oklch(63% 0.169 267.3)
-
Step 600
600 (this color)
#4063D7
oklch(54% 0.182 267.3)
-
Step 700
700
#3656BF
oklch(49.1% 0.169 267.1)
-
Step 800
800
#2D479B
oklch(42.8% 0.141 267.2)
-
Step 900
900
#283C7B
oklch(37.6% 0.11 267.6)
-
Step 950
950
#172448
oklch(27% 0.069 266.8)
#4063D7 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) | #0073DB | 0.046 |
| Deuteranopia (no green cones) | #0065D5 | 0.036 |
| Tritanopia (no blue cones) | #007F93 | 0.148 |
| Achromatopsia (no color) | #6C6C6C | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4063D7
#4063D7
oklch(54% 0.182 267.3)
- #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 #4063D7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.021
- Warm Blue #4B57DB ΔE 0.030
- Neon Blue #4361EE ΔE 0.036
- Azul #1D5DEC ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.048
- Cerulean Blue #056EEE ΔE 0.048
- Iris #6258C4 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.057
Use #4063D7 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.