#4276E5
Closest named color: Royal Blue (#4169E1). oklch(58.9% 0.178 263.2), rgb(66, 118, 229).
Aa
Black text reads best on this color (4.95:1).
About this color
#4276E5 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.178 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.033 away. Black text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #4276E5 |
| RGB | rgb(66, 118, 229) |
| HSL | hsl(221, 76%, 58%) |
| OKLCH | oklch(58.9% 0.178 263.2) |
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 #4276E5 | 4.23:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #4276E5 | 4.95:1 | AA | Lc 35.2 | Non-text elements, placeholder text |
| #4276E5 text on white | 4.23:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #4276E5 text on black | 4.95:1 | AA | Lc -32.8 | Non-text elements, placeholder text |
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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A6C1F5
oklch(80.9% 0.08 263.3)
-
Step 400
400
#769FF0
oklch(70.7% 0.128 263.1)
-
Step 500
500
#5385EB
oklch(63.2% 0.163 262.9)
-
Step 600
600 (this color)
#4276E5
oklch(58.9% 0.178 263.2)
-
Step 700
700
#2B59BD
oklch(49.1% 0.166 263.1)
-
Step 800
800
#254999
oklch(42.7% 0.138 263.5)
-
Step 900
900
#223E79
oklch(37.6% 0.106 263.2)
-
Step 950
950
#142547
oklch(27% 0.067 262.7)
#4276E5 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) | #3783E9 | 0.033 |
| Deuteranopia (no green cones) | #0074E3 | 0.034 |
| Tritanopia (no blue cones) | #0090A2 | 0.142 |
| Achromatopsia (no color) | #7B7B7B | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4276E5
#4276E5
oklch(58.9% 0.178 263.2)
- #A07500
#A07500
oklch(59% 0.121 82.8)
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 #4276E5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.033
- Clear Blue #247AFD ΔE 0.039
- Cerulean Blue #056EEE ΔE 0.043
- Neon Blue #4361EE ΔE 0.053
- Cornflower #6A79F7 ΔE 0.054
- Windows Blue #3778BF ΔE 0.061
- Soft Blue #6488EA ΔE 0.063
- Dark Sky Blue #448EE4 ΔE 0.064
Use #4276E5 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.