#355CDC
Closest named color: Warm Blue (#4B57DB). oklch(52.6% 0.201 266.4), rgb(53, 92, 220).
Aa
White text reads best on this color (5.65:1).
About this color
#355CDC is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.201 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.024 away. White text reads best on it, at 5.65:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.71:1 |
| White text | 5.65:1 |
Values
| HEX | #355CDC |
| RGB | rgb(53, 92, 220) |
| HSL | hsl(226, 70%, 54%) |
| OKLCH | oklch(52.6% 0.201 266.4) |
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 #355CDC | 5.65:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #355CDC | 3.71:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #355CDC text on white | 5.65:1 | AA | Lc 77.7 | Fine for body text |
| #355CDC text on black | 3.71:1 | AA large text | Lc -24.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A6C0FC
oklch(81% 0.09 266.3)
-
Step 400
400
#779CFA
oklch(70.7% 0.144 266.5)
-
Step 500
500
#5680F8
oklch(63.1% 0.185 266.6)
-
Step 600
600 (this color)
#355CDC
oklch(52.6% 0.201 266.4)
-
Step 700
700
#3053C8
oklch(49% 0.186 266.6)
-
Step 800
800
#2845A2
oklch(42.7% 0.154 266.6)
-
Step 900
900
#243B81
oklch(37.7% 0.122 266.8)
-
Step 950
950
#15234B
oklch(26.9% 0.076 266.7)
#355CDC 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) | #006FE0 | 0.047 |
| Deuteranopia (no green cones) | #0060DA | 0.027 |
| Tritanopia (no blue cones) | #007C93 | 0.157 |
| Achromatopsia (no color) | #676767 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355CDC
#355CDC
oklch(52.6% 0.201 266.4)
- #866500
#866500
oklch(52.6% 0.108 86.1)
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 #355CDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.024
- Azul #1D5DEC ΔE 0.029
- Neon Blue #4361EE ΔE 0.034
- Royal Blue #4169E1 ΔE 0.036
- Cerulean Blue #056EEE ΔE 0.050
- Bright Blue #0165FC ΔE 0.055
- Electric Blue #0652FF ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.064
Use #355CDC 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.