#4263B7
Closest named color: Mid Blue (#276AB3). oklch(51.8% 0.138 265.7), rgb(66, 99, 183).
Aa
White text reads best on this color (5.67:1).
About this color
#4263B7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.138 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.029 away. White text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.70:1 |
| White text | 5.67:1 |
Values
| HEX | #4263B7 |
| RGB | rgb(66, 99, 183) |
| HSL | hsl(223, 47%, 49%) |
| OKLCH | oklch(51.8% 0.138 265.7) |
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 #4263B7 | 5.67:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #4263B7 | 3.70:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #4263B7 text on white | 5.67:1 | AA | Lc 78.1 | Fine for body text |
| #4263B7 text on black | 3.70:1 | AA large text | Lc -23.7 | 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 700.
-
Step 50
50
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ACC0ED
oklch(80.8% 0.068 266.1)
-
Step 400
400
#819FE4
oklch(70.8% 0.107 265.8)
-
Step 500
500
#6285DC
oklch(63% 0.137 266)
-
Step 600
600
#496DC9
oklch(55.5% 0.148 265.7)
-
Step 700
700 (this color)
#4263B7
oklch(51.8% 0.138 265.7)
-
Step 800
800
#314B8D
oklch(42.8% 0.114 265.7)
-
Step 900
900
#2B3F71
oklch(37.8% 0.089 265.9)
-
Step 950
950
#192542
oklch(27% 0.057 265.8)
#4263B7 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) | #3A6CBA | 0.024 |
| Deuteranopia (no green cones) | #2662B5 | 0.026 |
| Tritanopia (no blue cones) | #007684 | 0.116 |
| Achromatopsia (no color) | #676767 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4263B7
#4263B7
oklch(51.8% 0.138 265.7)
- #846300
#846300
oklch(51.9% 0.106 85.7)
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 #4263B7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.029
- French Blue #436BAD ΔE 0.030
- Iris #6258C4 ΔE 0.053
- Flat Blue #3C73A8 ΔE 0.055
- Dusky Blue #475F94 ΔE 0.055
- Windows Blue #3778BF ΔE 0.056
- Muted Blue #3B719F ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.062
Use #4263B7 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.