#4557FF
Closest named color: Neon Blue (#4361EE). oklch(55.4% 0.246 270.9), rgb(69, 87, 255).
Aa
White text reads best on this color (5.17:1).
About this color
#4557FF is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.246 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.033 away. White text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.246) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.06:1 |
| White text | 5.17:1 |
Values
| HEX | #4557FF |
| RGB | rgb(69, 87, 255) |
| HSL | hsl(234, 100%, 64%) |
| OKLCH | oklch(55.4% 0.246 270.9) |
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 #4557FF | 5.17:1 | AA | Lc -80.2 | Fine for body text |
| Black text on #4557FF | 4.06:1 | AA large text | Lc 29.3 | Dividers and decoration only |
| #4557FF text on white | 5.17:1 | AA | Lc 74.8 | Content text, not long reading |
| #4557FF text on black | 4.06:1 | AA large text | Lc -26.9 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2E9FF
oklch(93.5% 0.031 271.7)
-
Step 200
200
#CBD8FF
oklch(88.5% 0.056 270.7)
-
Step 300
300
#A9BEFF
oklch(80.9% 0.095 270.4)
-
Step 400
400
#7E99FF
oklch(70.7% 0.152 270.9)
-
Step 500
500
#5F7BFF
oklch(63.1% 0.198 270.7)
-
Step 600
600 (this color)
#4557FF
oklch(55.4% 0.246 270.9)
-
Step 700
700
#3846DF
oklch(49.1% 0.228 270.7)
-
Step 800
800
#2E3BB4
oklch(42.7% 0.189 270.9)
-
Step 900
900
#27358E
oklch(37.7% 0.147 270.7)
-
Step 950
950
#172053
oklch(27% 0.093 271.2)
#4557FF 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) | #0076FF | 0.069 |
| Deuteranopia (no green cones) | #0064FC | 0.043 |
| Tritanopia (no blue cones) | #0084A4 | 0.193 |
| Achromatopsia (no color) | #6D6D6D | 0.247 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4557FF
#4557FF
oklch(55.4% 0.246 270.9)
- #8C6F00
#8C6F00
oklch(55.4% 0.113 90.5)
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 #4557FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.033
- Bright Blue #0165FC ΔE 0.043
- Azul #1D5DEC ΔE 0.044
- Electric Blue #0652FF ΔE 0.046
- Warm Blue #4B57DB ΔE 0.055
- Royal Blue #4169E1 ΔE 0.060
- Cerulean Blue #056EEE ΔE 0.062
- Light Royal Blue #3A2EFE ΔE 0.071
Use #4557FF 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.