#356AE1
Closest named color: Royal Blue (#4169E1). oklch(55.7% 0.19 263.4), rgb(53, 106, 225).
Aa
White text reads best on this color (4.88:1).
About this color
#356AE1 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.190 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.011 away. White text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #356AE1 |
| RGB | rgb(53, 106, 225) |
| HSL | hsl(222, 74%, 55%) |
| OKLCH | oklch(55.7% 0.19 263.4) |
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 #356AE1 | 4.88:1 | AA | Lc -78.8 | Fine for body text |
| Black text on #356AE1 | 4.30:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #356AE1 text on white | 4.88:1 | AA | Lc 73.3 | Content text, not long reading |
| #356AE1 text on black | 4.30:1 | AA large text | Lc -28.4 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A4C1F9
oklch(81% 0.086 263.3)
-
Step 400
400
#739EF6
oklch(70.6% 0.138 263.5)
-
Step 500
500
#5083F2
oklch(63.1% 0.175 263.6)
-
Step 600
600 (this color)
#356AE1
oklch(55.7% 0.19 263.4)
-
Step 700
700
#2857C3
oklch(49.1% 0.177 263.5)
-
Step 800
800
#22489E
oklch(42.7% 0.147 263.5)
-
Step 900
900
#203D7D
oklch(37.6% 0.114 263.5)
-
Step 950
950
#132449
oklch(26.8% 0.072 263.7)
#356AE1 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) | #0979E5 | 0.039 |
| Deuteranopia (no green cones) | #0069DF | 0.025 |
| Tritanopia (no blue cones) | #00879B | 0.149 |
| Achromatopsia (no color) | #717171 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356AE1
#356AE1
oklch(55.7% 0.19 263.4)
- #936C00
#936C00
oklch(55.6% 0.114 83.5)
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 #356AE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.011
- Cerulean Blue #056EEE ΔE 0.028
- Neon Blue #4361EE ΔE 0.031
- Azul #1D5DEC ΔE 0.042
- Warm Blue #4B57DB ΔE 0.046
- Bright Blue #0165FC ΔE 0.049
- Clear Blue #247AFD ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.062
Use #356AE1 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.