#355DFD
Closest named color: Bright Blue (#0165FC). oklch(55.6% 0.241 266.9), rgb(53, 93, 253).
Aa
White text reads best on this color (5.07:1).
About this color
#355DFD is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.241 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Blue (#0165FC), ΔE 0.026 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.241) |
| Temperature | cool |
| Nearest name | Bright Blue (#0165FC) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #355DFD |
| RGB | rgb(53, 93, 253) |
| HSL | hsl(228, 98%, 60%) |
| OKLCH | oklch(55.6% 0.241 266.9) |
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 #355DFD | 5.07:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #355DFD | 4.13:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #355DFD text on white | 5.07:1 | AA | Lc 74.2 | Content text, not long reading |
| #355DFD text on black | 4.13:1 | AA large text | Lc -27.5 | 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
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600 (this color)
#355DFD
oklch(55.6% 0.241 266.9)
-
Step 700
700
#294BDD
oklch(49.1% 0.224 266.8)
-
Step 800
800
#223FB2
oklch(42.7% 0.185 266.8)
-
Step 900
900
#1F388D
oklch(37.8% 0.144 266.7)
-
Step 950
950
#122252
oklch(27.1% 0.09 266.4)
#355DFD 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) | #0078FF | 0.060 |
| Deuteranopia (no green cones) | #0065FA | 0.026 |
| Tritanopia (no blue cones) | #0087A5 | 0.185 |
| Achromatopsia (no color) | #6E6E6E | 0.242 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355DFD
#355DFD
oklch(55.6% 0.241 266.9)
- #906E00
#906E00
oklch(55.7% 0.114 87.1)
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 #355DFD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Blue #0165FC ΔE 0.026
- Neon Blue #4361EE ΔE 0.028
- Azul #1D5DEC ΔE 0.031
- Electric Blue #0652FF ΔE 0.038
- Cerulean Blue #056EEE ΔE 0.046
- Royal Blue #4169E1 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.056
- Clear Blue #247AFD ΔE 0.065
Use #355DFD 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.