#3355FF
Closest named color: Electric Blue (#0652FF). oklch(54.3% 0.252 267.5), rgb(51, 85, 255).
Aa
White text reads best on this color (5.40:1).
About this color
#3355FF is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.252 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Electric Blue (#0652FF), ΔE 0.026 away. White text reads best on it, at 5.40:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.252) |
| Temperature | cool |
| Nearest name | Electric Blue (#0652FF) |
| Black text | 3.88:1 |
| White text | 5.40:1 |
Values
| HEX | #3355FF |
| RGB | rgb(51, 85, 255) |
| HSL | hsl(230, 100%, 60%) |
| OKLCH | oklch(54.3% 0.252 267.5) |
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 #3355FF | 5.40:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #3355FF | 3.88:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #3355FF text on white | 5.40:1 | AA | Lc 76.0 | Fine for body text |
| #3355FF text on black | 3.88:1 | AA large text | Lc -25.7 | 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 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
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400
#779BFF
oklch(70.7% 0.152 267.5)
-
Step 500
500
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600 (this color)
#3355FF
oklch(54.3% 0.252 267.5)
-
Step 700
700
#2A47E3
oklch(49.1% 0.236 267.5)
-
Step 800
800
#233CB7
oklch(42.7% 0.195 267.6)
-
Step 900
900
#1F3690
oklch(37.7% 0.151 267.4)
-
Step 950
950
#122154
oklch(27% 0.095 267.3)
#3355FF 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) | #0074FF | 0.066 |
| Deuteranopia (no green cones) | #0060FC | 0.028 |
| Tritanopia (no blue cones) | #0084A3 | 0.195 |
| Achromatopsia (no color) | #6A6A6A | 0.253 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3355FF
#3355FF
oklch(54.3% 0.252 267.5)
- #8B6B00
#8B6B00
oklch(54.4% 0.111 87.9)
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 #3355FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Electric Blue #0652FF ΔE 0.026
- Azul #1D5DEC ΔE 0.035
- Bright Blue #0165FC ΔE 0.035
- Neon Blue #4361EE ΔE 0.041
- Cerulean Blue #056EEE ΔE 0.060
- Warm Blue #4B57DB ΔE 0.060
- Light Royal Blue #3A2EFE ΔE 0.061
- Royal Blue #4169E1 ΔE 0.066
Use #3355FF 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.