#545FE3
Closest named color: Neon Blue (#4361EE). oklch(55.3% 0.198 274.3), rgb(84, 95, 227).
Aa
White text reads best on this color (5.09:1).
About this color
#545FE3 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.198 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.025 away. White text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.198) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.12:1 |
| White text | 5.09:1 |
Values
| HEX | #545FE3 |
| RGB | rgb(84, 95, 227) |
| HSL | hsl(235, 72%, 61%) |
| OKLCH | oklch(55.3% 0.198 274.3) |
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 #545FE3 | 5.09:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #545FE3 | 4.12:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #545FE3 text on white | 5.09:1 | AA | Lc 74.7 | Content text, not long reading |
| #545FE3 text on black | 4.12:1 | AA large text | Lc -27.0 | 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 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
#6B7BF5
oklch(63.1% 0.181 274.4)
-
Step 600
600 (this color)
#545FE3
oklch(55.3% 0.198 274.3)
-
Step 700
700
#464EC6
oklch(49% 0.184 274.5)
-
Step 800
800
#3941A0
oklch(42.7% 0.152 274.3)
-
Step 900
900
#30387F
oklch(37.6% 0.119 274.3)
-
Step 950
950
#1C224A
oklch(27% 0.074 274)
#545FE3 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) | #0075E7 | 0.067 |
| Deuteranopia (no green cones) | #0068E0 | 0.058 |
| Tritanopia (no blue cones) | #007F98 | 0.165 |
| Achromatopsia (no color) | #6E6E6E | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #545FE3
#545FE3
oklch(55.3% 0.198 274.3)
- #887000
#887000
oklch(55.2% 0.113 94)
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 #545FE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.025
- Warm Blue #4B57DB ΔE 0.026
- Royal Blue #4169E1 ΔE 0.029
- Dark Periwinkle #665FD1 ΔE 0.037
- Slate Blue #6A5ACD ΔE 0.046
- Light Indigo #6D5ACF ΔE 0.047
- Iris #6258C4 ΔE 0.052
- Azul #1D5DEC ΔE 0.053
Use #545FE3 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.