#545FE9
Closest named color: Neon Blue (#4361EE). oklch(55.7% 0.206 274.1), rgb(84, 95, 233).
Aa
White text reads best on this color (5.01:1).
About this color
#545FE9 is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.206 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.021 away. White text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.206) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.19:1 |
| White text | 5.01:1 |
Values
| HEX | #545FE9 |
| RGB | rgb(84, 95, 233) |
| HSL | hsl(236, 77%, 62%) |
| OKLCH | oklch(55.7% 0.206 274.1) |
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 #545FE9 | 5.01:1 | AA | Lc -79.6 | Fine for body text |
| Black text on #545FE9 | 4.19:1 | AA large text | Lc 29.9 | Dividers and decoration only |
| #545FE9 text on white | 5.01:1 | AA | Lc 74.2 | Content text, not long reading |
| #545FE9 text on black | 4.19:1 | AA large text | Lc -27.5 | 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 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
#CED7FC
oklch(88.4% 0.052 274.5)
-
Step 300
300
#AEBDFD
oklch(81% 0.092 274)
-
Step 400
400
#8597FC
oklch(70.6% 0.149 274.3)
-
Step 500
500
#697AF9
oklch(63.1% 0.188 274)
-
Step 600
600 (this color)
#545FE9
oklch(55.7% 0.206 274.1)
-
Step 700
700
#454DCA
oklch(49.1% 0.191 274.2)
-
Step 800
800
#3840A3
oklch(42.7% 0.158 274.1)
-
Step 900
900
#303882
oklch(37.8% 0.123 274.2)
-
Step 950
950
#1C214C
oklch(27% 0.079 274.8)
#545FE9 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) | #0076EE | 0.068 |
| Deuteranopia (no green cones) | #0069E6 | 0.057 |
| Tritanopia (no blue cones) | #00819B | 0.170 |
| Achromatopsia (no color) | #6F6F6F | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #545FE9
#545FE9
oklch(55.7% 0.206 274.1)
- #8A7200
#8A7200
oklch(55.9% 0.115 94.3)
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 #545FE9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.021
- Warm Blue #4B57DB ΔE 0.031
- Royal Blue #4169E1 ΔE 0.032
- Dark Periwinkle #665FD1 ΔE 0.044
- Azul #1D5DEC ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.053
- Light Indigo #6D5ACF ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.058
Use #545FE9 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.