#4E55DE
Closest named color: Warm Blue (#4B57DB). oklch(52.8% 0.205 274.7), rgb(78, 85, 222).
Aa
White text reads best on this color (5.70:1).
About this color
#4E55DE is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.205 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.007 away. White text reads best on it, at 5.70:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.205) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.67:1 |
| White text | 5.70:1 |
Values
| HEX | #4E55DE |
| RGB | rgb(78, 85, 222) |
| HSL | hsl(237, 69%, 59%) |
| OKLCH | oklch(52.8% 0.205 274.7) |
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 #4E55DE | 5.70:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #4E55DE | 3.67:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #4E55DE text on white | 5.70:1 | AA | Lc 78.0 | Fine for body text |
| #4E55DE text on black | 3.67:1 | AA large text | Lc -23.8 | 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
#CFD7FC
oklch(88.5% 0.052 275.7)
-
Step 300
300
#AEBCFD
oklch(80.8% 0.093 274.7)
-
Step 400
400
#8697FB
oklch(70.6% 0.147 274.7)
-
Step 500
500
#6B79F9
oklch(63% 0.189 274.9)
-
Step 600
600 (this color)
#4E55DE
oklch(52.8% 0.205 274.7)
-
Step 700
700
#464DCA
oklch(49.2% 0.19 274.5)
-
Step 800
800
#3940A3
oklch(42.7% 0.157 274.5)
-
Step 900
900
#303881
oklch(37.8% 0.122 274.3)
-
Step 950
950
#1C214C
oklch(27% 0.079 274.8)
#4E55DE 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) | #006DE2 | 0.067 |
| Deuteranopia (no green cones) | #0060DB | 0.056 |
| Tritanopia (no blue cones) | #007891 | 0.170 |
| Achromatopsia (no color) | #666666 | 0.206 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4E55DE
#4E55DE
oklch(52.8% 0.205 274.7)
- #7F6900
#7F6900
oklch(52.7% 0.108 94.5)
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 #4E55DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.007
- Neon Blue #4361EE ΔE 0.036
- Royal Blue #4169E1 ΔE 0.046
- Azul #1D5DEC ΔE 0.049
- Dark Periwinkle #665FD1 ΔE 0.049
- Iris #6258C4 ΔE 0.051
- Slate Blue #6A5ACD ΔE 0.051
- Light Indigo #6D5ACF ΔE 0.054
Use #4E55DE 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.