#4D57FC
Closest named color: Neon Blue (#4361EE). oklch(55.6% 0.24 272.9), rgb(77, 87, 252).
Aa
White text reads best on this color (5.14:1).
About this color
#4D57FC is a medium-dark, vivid blue. In OKLCH its lightness is 56%, its chroma 0.240 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Neon Blue (#4361EE), ΔE 0.030 away. White text reads best on it, at 5.14:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | vivid (0.240) |
| Temperature | cool |
| Nearest name | Neon Blue (#4361EE) |
| Black text | 4.08:1 |
| White text | 5.14:1 |
Values
| HEX | #4D57FC |
| RGB | rgb(77, 87, 252) |
| HSL | hsl(237, 97%, 65%) |
| OKLCH | oklch(55.6% 0.24 272.9) |
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 #4D57FC | 5.14:1 | AA | Lc -80.1 | Fine for body text |
| Black text on #4D57FC | 4.08:1 | AA large text | Lc 29.4 | Dividers and decoration only |
| #4D57FC text on white | 5.14:1 | AA | Lc 74.7 | Content text, not long reading |
| #4D57FC text on black | 4.08:1 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CCD7FF
oklch(88.4% 0.057 273.1)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8298FF
oklch(70.8% 0.152 272.8)
-
Step 500
500
#6579FF
oklch(63.1% 0.198 273)
-
Step 600
600 (this color)
#4D57FC
oklch(55.6% 0.24 272.9)
-
Step 700
700
#3F45DC
oklch(49.1% 0.224 272.8)
-
Step 800
800
#333BB2
oklch(42.8% 0.185 272.6)
-
Step 900
900
#2B348C
oklch(37.6% 0.145 272.8)
-
Step 950
950
#192052
oklch(27% 0.091 272.8)
#4D57FC 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 | 0.073 |
| Deuteranopia (no green cones) | #0065F9 | 0.051 |
| Tritanopia (no blue cones) | #0083A2 | 0.192 |
| Achromatopsia (no color) | #6D6D6D | 0.241 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D57FC
#4D57FC
oklch(55.6% 0.24 272.9)
- #8A7100
#8A7100
oklch(55.6% 0.114 93.5)
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 #4D57FC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Neon Blue #4361EE ΔE 0.030
- Azul #1D5DEC ΔE 0.048
- Warm Blue #4B57DB ΔE 0.050
- Bright Blue #0165FC ΔE 0.050
- Electric Blue #0652FF ΔE 0.055
- Royal Blue #4169E1 ΔE 0.057
- Cerulean Blue #056EEE ΔE 0.065
- Purpley Blue #5F34E7 ΔE 0.072
Use #4D57FC 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.