#355FD2
Closest named color: Warm Blue (#4B57DB). oklch(52.3% 0.184 265.3), rgb(53, 95, 210).
Aa
White text reads best on this color (5.64:1).
About this color
#355FD2 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.184 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.031 away. White text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.71:1 |
| White text | 5.64:1 |
Values
| HEX | #355FD2 |
| RGB | rgb(53, 95, 210) |
| HSL | hsl(224, 64%, 52%) |
| OKLCH | oklch(52.3% 0.184 265.3) |
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 #355FD2 | 5.64:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #355FD2 | 3.71:1 | AA large text | Lc 26.3 | Dividers and decoration only |
| #355FD2 text on white | 5.64:1 | AA | Lc 77.7 | Fine for body text |
| #355FD2 text on black | 3.71:1 | AA large text | Lc -24.0 | 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 700.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#C9D9FB
oklch(88.4% 0.05 265.4)
-
Step 300
300
#A5C0FB
oklch(80.9% 0.089 265.4)
-
Step 400
400
#759DF9
oklch(70.7% 0.142 265.2)
-
Step 500
500
#5381F6
oklch(63.1% 0.182 265.4)
-
Step 600
600
#3A67E5
oklch(55.6% 0.198 265.4)
-
Step 700
700 (this color)
#355FD2
oklch(52.3% 0.184 265.3)
-
Step 800
800
#2546A1
oklch(42.7% 0.153 265.3)
-
Step 900
900
#223C80
oklch(37.7% 0.119 265.3)
-
Step 950
950
#14244B
oklch(27.1% 0.075 265)
#355FD2 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) | #006FD6 | 0.042 |
| Deuteranopia (no green cones) | #0060D0 | 0.027 |
| Tritanopia (no blue cones) | #007B8F | 0.145 |
| Achromatopsia (no color) | #676767 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355FD2
#355FD2
oklch(52.3% 0.184 265.3)
- #866400
#866400
oklch(52.4% 0.107 85.2)
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 #355FD2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.031
- Royal Blue #4169E1 ΔE 0.037
- Azul #1D5DEC ΔE 0.043
- Neon Blue #4361EE ΔE 0.046
- Cerulean Blue #056EEE ΔE 0.055
- Iris #6258C4 ΔE 0.059
- Mid Blue #276AB3 ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.060
Use #355FD2 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.