#355AD5
Closest named color: Warm Blue (#4B57DB). oklch(51.6% 0.194 266.6), rgb(53, 90, 213).
Aa
White text reads best on this color (5.87:1).
About this color
#355AD5 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.194 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 5.87:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.57:1 |
| White text | 5.87:1 |
Values
| HEX | #355AD5 |
| RGB | rgb(53, 90, 213) |
| HSL | hsl(226, 66%, 52%) |
| OKLCH | oklch(51.6% 0.194 266.6) |
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 #355AD5 | 5.87:1 | AA | Lc -84.1 | Fine for body text |
| Black text on #355AD5 | 3.57:1 | AA large text | Lc 25.2 | Dividers and decoration only |
| #355AD5 text on white | 5.87:1 | AA | Lc 78.8 | Fine for body text |
| #355AD5 text on black | 3.57:1 | AA large text | Lc -23.0 | 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
#F1F5FE
oklch(97% 0.013 266.7)
-
Step 100
100
#E2EAFD
oklch(93.7% 0.027 267.5)
-
Step 200
200
#C9D9FD
oklch(88.5% 0.053 266.4)
-
Step 300
300
#A5BFFE
oklch(80.8% 0.094 267)
-
Step 400
400
#769CFE
oklch(70.8% 0.15 266.6)
-
Step 500
500
#547FFC
oklch(63.1% 0.192 266.6)
-
Step 600
600
#3C64EB
oklch(55.6% 0.209 266.8)
-
Step 700
700 (this color)
#355AD5
oklch(51.6% 0.194 266.6)
-
Step 800
800
#2744A5
oklch(42.7% 0.16 266.7)
-
Step 900
900
#233B83
oklch(37.8% 0.125 266.5)
-
Step 950
950
#15234D
oklch(27% 0.08 267.1)
#355AD5 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) | #006CD9 | 0.046 |
| Deuteranopia (no green cones) | #005DD3 | 0.027 |
| Tritanopia (no blue cones) | #00798F | 0.153 |
| Achromatopsia (no color) | #646464 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #355AD5
#355AD5
oklch(51.6% 0.194 266.6)
- #826300
#826300
oklch(51.7% 0.106 87.1)
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 #355AD5, closest first.
No curated palette has a color within ΔE 0.04 of #355AD5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Azul #1D5DEC ΔE 0.038
- Royal Blue #4169E1 ΔE 0.044
- Neon Blue #4361EE ΔE 0.045
- Cerulean Blue #056EEE ΔE 0.060
- Iris #6258C4 ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.065
- Blue Blue #2242C7 ΔE 0.065
Use #355AD5 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.