#545FE4
Closest named color: Neon Blue (#4361EE). oklch(55.4% 0.199 274.3), rgb(84, 95, 228).
Aa
White text reads best on this color (5.07:1).
About this color
#545FE4 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.199 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.024 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #545FE4 |
| RGB | rgb(84, 95, 228) |
| HSL | hsl(235, 73%, 61%) |
| OKLCH | oklch(55.4% 0.199 274.3) |
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 #545FE4 | 5.07:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #545FE4 | 4.13:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #545FE4 text on white | 5.07:1 | AA | Lc 74.6 | Content text, not long reading |
| #545FE4 text on black | 4.13:1 | AA large text | Lc -27.1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CFD7FB
oklch(88.5% 0.05 275.4)
-
Step 300
300
#AFBDFB
oklch(81% 0.089 274.4)
-
Step 400
400
#8698F9
oklch(70.7% 0.143 274.2)
-
Step 500
500
#6A7BF6
oklch(63.2% 0.183 274)
-
Step 600
600 (this color)
#545FE4
oklch(55.4% 0.199 274.3)
-
Step 700
700
#464EC7
oklch(49.1% 0.185 274.4)
-
Step 800
800
#3941A1
oklch(42.8% 0.153 274.3)
-
Step 900
900
#303880
oklch(37.7% 0.12 274.3)
-
Step 950
950
#1C224B
oklch(27.1% 0.076 274)
#545FE4 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) | #0075E8 | 0.067 |
| Deuteranopia (no green cones) | #0068E1 | 0.058 |
| Tritanopia (no blue cones) | #008098 | 0.168 |
| Achromatopsia (no color) | #6E6E6E | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #545FE4
#545FE4
oklch(55.4% 0.199 274.3)
- #887100
#887100
oklch(55.4% 0.114 94.8)
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 #545FE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.024
- Warm Blue #4B57DB ΔE 0.027
- Royal Blue #4169E1 ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.038
- Slate Blue #6A5ACD ΔE 0.047
- Light Indigo #6D5ACF ΔE 0.048
- Azul #1D5DEC ΔE 0.053
- Iris #6258C4 ΔE 0.053
Use #545FE4 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.