#4063BE
Closest named color: Mid Blue (#276AB3). oklch(52.2% 0.148 265.7), rgb(64, 99, 190).
Aa
White text reads best on this color (5.60:1).
About this color
#4063BE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.148 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.034 away. White text reads best on it, at 5.60:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #4063BE |
| RGB | rgb(64, 99, 190) |
| HSL | hsl(223, 50%, 50%) |
| OKLCH | oklch(52.2% 0.148 265.7) |
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 #4063BE | 5.60:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #4063BE | 3.74:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #4063BE text on white | 5.60:1 | AA | Lc 77.7 | Fine for body text |
| #4063BE text on black | 3.74:1 | AA large text | Lc -24.1 | 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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F4
oklch(88.5% 0.039 266.5)
-
Step 300
300
#ABC0F0
oklch(80.9% 0.072 266.3)
-
Step 400
400
#7E9EE9
oklch(70.6% 0.116 265.9)
-
Step 500
500
#5F85E2
oklch(63.2% 0.147 265.7)
-
Step 600
600
#466CD0
oklch(55.6% 0.16 265.8)
-
Step 700
700 (this color)
#4063BE
oklch(52.2% 0.148 265.7)
-
Step 800
800
#2E4A91
oklch(42.7% 0.122 265.4)
-
Step 900
900
#293E74
oklch(37.6% 0.096 266)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#4063BE 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) | #336EC1 | 0.029 |
| Deuteranopia (no green cones) | #1762BC | 0.032 |
| Tritanopia (no blue cones) | #007887 | 0.123 |
| Achromatopsia (no color) | #686868 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4063BE
#4063BE
oklch(52.2% 0.148 265.7)
- #856400
#856400
oklch(52.2% 0.107 85.9)
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 #4063BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.034
- French Blue #436BAD ΔE 0.038
- Iris #6258C4 ΔE 0.050
- Royal Blue #4169E1 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.056
- Windows Blue #3778BF ΔE 0.056
- Dark Periwinkle #665FD1 ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.061
Use #4063BE 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.