#356ED5
Closest named color: Royal Blue (#4169E1). oklch(55.6% 0.17 261.1), rgb(53, 110, 213).
Aa
White text reads best on this color (4.83:1).
About this color
#356ED5 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.170 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.025 away. White text reads best on it, at 4.83:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.34:1 |
| White text | 4.83:1 |
Values
| HEX | #356ED5 |
| RGB | rgb(53, 110, 213) |
| HSL | hsl(219, 66%, 52%) |
| OKLCH | oklch(55.6% 0.17 261.1) |
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 #356ED5 | 4.83:1 | AA | Lc -78.5 | Fine for body text |
| Black text on #356ED5 | 4.34:1 | AA large text | Lc 31.0 | Non-text elements, placeholder text |
| #356ED5 text on white | 4.83:1 | AA | Lc 73.1 | Content text, not long reading |
| #356ED5 text on black | 4.34:1 | AA large text | Lc -28.6 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CADAF6
oklch(88.5% 0.042 261.7)
-
Step 300
300
#A5C2F3
oklch(81% 0.077 260.8)
-
Step 400
400
#75A0ED
oklch(70.7% 0.123 261.5)
-
Step 500
500
#5186E7
oklch(63% 0.157 261.4)
-
Step 600
600 (this color)
#356ED5
oklch(55.6% 0.17 261.1)
-
Step 700
700
#285BB8
oklch(49% 0.157 261.2)
-
Step 800
800
#224B95
oklch(42.7% 0.13 261.1)
-
Step 900
900
#203F77
oklch(37.6% 0.103 261.2)
-
Step 950
950
#142646
oklch(27.2% 0.064 261.1)
#356ED5 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) | #3379D9 | 0.029 |
| Deuteranopia (no green cones) | #006BD3 | 0.027 |
| Tritanopia (no blue cones) | #008797 | 0.134 |
| Achromatopsia (no color) | #727272 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #356ED5
#356ED5
oklch(55.6% 0.17 261.1)
- #956B00
#956B00
oklch(55.6% 0.115 81.4)
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 #356ED5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.025
- Cerulean Blue #056EEE ΔE 0.042
- Windows Blue #3778BF ΔE 0.047
- Neon Blue #4361EE ΔE 0.052
- Mid Blue #276AB3 ΔE 0.055
- Warm Blue #4B57DB ΔE 0.058
- Azul #1D5DEC ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.062
Use #356ED5 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.