#3558E1
Closest named color: Azul (#1D5DEC). oklch(52.2% 0.212 267.3), rgb(53, 88, 225).
Aa
White text reads best on this color (5.77:1).
About this color
#3558E1 is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.212 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Azul (#1D5DEC), ΔE 0.024 away. White text reads best on it, at 5.77:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.212) |
| Temperature | cool |
| Nearest name | Azul (#1D5DEC) |
| Black text | 3.63:1 |
| White text | 5.77:1 |
Values
| HEX | #3558E1 |
| RGB | rgb(53, 88, 225) |
| HSL | hsl(228, 74%, 55%) |
| OKLCH | oklch(52.2% 0.212 267.3) |
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 #3558E1 | 5.77:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #3558E1 | 3.63:1 | AA large text | Lc 25.8 | Dividers and decoration only |
| #3558E1 text on white | 5.77:1 | AA | Lc 78.2 | Fine for body text |
| #3558E1 text on black | 3.63:1 | AA large text | Lc -23.5 | 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 700.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#557EFF
oklch(63.2% 0.197 267.3)
-
Step 600
600
#3A60F6
oklch(55.7% 0.228 267.3)
-
Step 700
700 (this color)
#3558E1
oklch(52.2% 0.212 267.3)
-
Step 800
800
#2641AD
oklch(42.8% 0.175 267.4)
-
Step 900
900
#223989
oklch(37.8% 0.136 267.3)
-
Step 950
950
#142250
oklch(27% 0.086 267.5)
#3558E1 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) | #006EE5 | 0.052 |
| Deuteranopia (no green cones) | #005EDE | 0.028 |
| Tritanopia (no blue cones) | #007B94 | 0.165 |
| Achromatopsia (no color) | #666666 | 0.212 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3558E1
#3558E1
oklch(52.2% 0.212 267.3)
- #846500
#846500
oklch(52.3% 0.107 87.5)
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 #3558E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Azul #1D5DEC ΔE 0.024
- Warm Blue #4B57DB ΔE 0.025
- Neon Blue #4361EE ΔE 0.034
- Royal Blue #4169E1 ΔE 0.044
- Bright Blue #0165FC ΔE 0.052
- Electric Blue #0652FF ΔE 0.054
- Cerulean Blue #056EEE ΔE 0.054
- Blue Blue #2242C7 ΔE 0.070
Use #3558E1 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.