#4E55C1
Closest named color: Iris (#6258C4). oklch(50.5% 0.166 275.9), rgb(78, 85, 193).
Aa
White text reads best on this color (6.18:1).
About this color
#4E55C1 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.166 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.032 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #4E55C1 |
| RGB | rgb(78, 85, 193) |
| HSL | hsl(236, 48%, 53%) |
| OKLCH | oklch(50.5% 0.166 275.9) |
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 #4E55C1 | 6.18:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #4E55C1 | 3.39:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #4E55C1 text on white | 6.18:1 | AA | Lc 80.5 | Fine for body text |
| #4E55C1 text on black | 3.39:1 | AA large text | Lc -21.3 | 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 700.
-
Step 50
50
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FA
oklch(93.6% 0.023 275.4)
-
Step 200
200
#D0D7F7
oklch(88.4% 0.045 275.7)
-
Step 300
300
#B2BDF5
oklch(80.9% 0.08 275.8)
-
Step 400
400
#8B99F0
oklch(70.8% 0.128 275.7)
-
Step 500
500
#707CEB
oklch(63% 0.165 275.9)
-
Step 600
600
#5A63D9
oklch(55.6% 0.178 275.7)
-
Step 700
700 (this color)
#4E55C1
oklch(50.5% 0.166 275.9)
-
Step 800
800
#3D4398
oklch(42.7% 0.137 275.9)
-
Step 900
900
#333979
oklch(37.6% 0.108 275.9)
-
Step 950
950
#1E2247
oklch(27% 0.068 276.2)
#4E55C1 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) | #0066C5 | 0.063 |
| Deuteranopia (no green cones) | #005CBF | 0.058 |
| Tritanopia (no blue cones) | #006E83 | 0.143 |
| Achromatopsia (no color) | #616161 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E55C1
#4E55C1
oklch(50.5% 0.166 275.9)
- #766300
#766300
oklch(50.3% 0.103 95.9)
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 #4E55C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.032
- Warm Blue #4B57DB ΔE 0.040
- Slate Blue #6A5ACD ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.051
- Bluey Purple #6241C7 ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.054
- Blurple #5539CC ΔE 0.061
Use #4E55C1 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.