#355FCD
Closest named color: Warm Blue (#4B57DB). oklch(52% 0.177 265), rgb(53, 95, 205).
Aa
White text reads best on this color (5.72:1).
About this color
#355FCD is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.177 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.036 away. White text reads best on it, at 5.72:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.66:1 |
| White text | 5.72:1 |
Values
| HEX | #355FCD |
| RGB | rgb(53, 95, 205) |
| HSL | hsl(223, 60%, 51%) |
| OKLCH | oklch(52% 0.177 265) |
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 #355FCD | 5.72:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #355FCD | 3.66:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #355FCD text on white | 5.72:1 | AA | Lc 78.2 | Fine for body text |
| #355FCD text on black | 3.66:1 | AA large text | Lc -23.6 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9FA
oklch(88.5% 0.048 266)
-
Step 300
300
#A6C0F9
oklch(80.9% 0.086 265.5)
-
Step 400
400
#769DF6
oklch(70.6% 0.138 265.1)
-
Step 500
500
#5482F2
oklch(63% 0.175 265)
-
Step 600
600
#3B68E1
oklch(55.5% 0.191 265.2)
-
Step 700
700 (this color)
#355FCD
oklch(52% 0.177 265)
-
Step 800
800
#26479E
oklch(42.7% 0.147 265)
-
Step 900
900
#233D7D
oklch(37.7% 0.113 264.9)
-
Step 950
950
#152449
oklch(27% 0.072 265.3)
#355FCD 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) | #036ED1 | 0.040 |
| Deuteranopia (no green cones) | #0060CB | 0.027 |
| Tritanopia (no blue cones) | #007A8D | 0.140 |
| Achromatopsia (no color) | #666666 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355FCD
#355FCD
oklch(52% 0.177 265)
- #856300
#856300
oklch(52% 0.107 85)
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 #355FCD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.036
- Royal Blue #4169E1 ΔE 0.042
- Azul #1D5DEC ΔE 0.050
- Neon Blue #4361EE ΔE 0.054
- Mid Blue #276AB3 ΔE 0.054
- Iris #6258C4 ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.061
Use #355FCD 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.