#355FE3
Closest named color: Azul (#1D5DEC). oklch(53.7% 0.206 266), rgb(53, 95, 227).
Aa
White text reads best on this color (5.38:1).
About this color
#355FE3 is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.206 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.022 away. White text reads best on it, at 5.38:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.89:1 |
| White text | 5.38:1 |
Values
| HEX | #355FE3 |
| RGB | rgb(53, 95, 227) |
| HSL | hsl(226, 76%, 55%) |
| OKLCH | oklch(53.7% 0.206 266) |
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 #355FE3 | 5.38:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #355FE3 | 3.89:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #355FE3 text on white | 5.38:1 | AA | Lc 76.2 | Fine for body text |
| #355FE3 text on black | 3.89:1 | AA large text | Lc -25.5 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E1EAFD
oklch(93.6% 0.028 265.4)
-
Step 200
200
#C9D9FC
oklch(88.5% 0.051 265.9)
-
Step 300
300
#A5C0FD
oklch(81% 0.092 265.9)
-
Step 400
400
#759CFD
oklch(70.7% 0.149 266.1)
-
Step 500
500
#5380FA
oklch(63.1% 0.189 265.9)
-
Step 600
600 (this color)
#355FE3
oklch(53.7% 0.206 266)
-
Step 700
700
#2D53CB
oklch(49.1% 0.191 266)
-
Step 800
800
#2645A4
oklch(42.8% 0.158 266.1)
-
Step 900
900
#223B82
oklch(37.6% 0.124 266)
-
Step 950
950
#14234C
oklch(26.9% 0.078 266.1)
#355FE3 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) | #0073E7 | 0.049 |
| Deuteranopia (no green cones) | #0062E0 | 0.026 |
| Tritanopia (no blue cones) | #008098 | 0.160 |
| Achromatopsia (no color) | #6A6A6A | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355FE3
#355FE3
oklch(53.7% 0.206 266)
- #8A6800
#8A6800
oklch(53.7% 0.11 86)
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 #355FE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.022
- Neon Blue #4361EE ΔE 0.023
- Warm Blue #4B57DB ΔE 0.029
- Royal Blue #4169E1 ΔE 0.029
- Cerulean Blue #056EEE ΔE 0.040
- Bright Blue #0165FC ΔE 0.044
- Electric Blue #0652FF ΔE 0.058
- Dark Periwinkle #665FD1 ΔE 0.065
Use #355FE3 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.