#4025FF
Closest named color: Light Royal Blue (#3A2EFE). oklch(49.1% 0.289 273.3), rgb(64, 37, 255).
Aa
White text reads best on this color (7.17:1).
About this color
#4025FF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.289 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Light Royal Blue (#3A2EFE), ΔE 0.010 away. White text reads best on it, at 7.17:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.289) |
| Temperature | cool |
| Nearest name | Light Royal Blue (#3A2EFE) |
| Black text | 2.92:1 |
| White text | 7.17:1 |
Values
| HEX | #4025FF |
| RGB | rgb(64, 37, 255) |
| HSL | hsl(247, 100%, 57%) |
| OKLCH | oklch(49.1% 0.289 273.3) |
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 #4025FF | 7.17:1 | AAA | Lc -88.0 | Fine for body text |
| Black text on #4025FF | 2.92:1 | Fails | Lc 21.1 | Dividers and decoration only |
| #4025FF text on white | 7.17:1 | AAA | Lc 83.0 | Fine for body text |
| #4025FF text on black | 2.92:1 | Fails | Lc -18.9 | 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 700.
-
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
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8297FF
oklch(70.6% 0.154 273.2)
-
Step 500
500
#6679FF
oklch(63.1% 0.198 273.3)
-
Step 600
600
#4E55FF
oklch(55.6% 0.246 273.3)
-
Step 700
700 (this color)
#4025FF
oklch(49.1% 0.289 273.3)
-
Step 800
800
#3325CE
oklch(42.7% 0.239 273.2)
-
Step 900
900
#2A29A1
oklch(37.7% 0.185 273.3)
-
Step 950
950
#171A5E
oklch(26.8% 0.118 273.2)
#4025FF 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) | #0061FF | 0.094 |
| Deuteranopia (no green cones) | #004DFC | 0.060 |
| Tritanopia (no blue cones) | #007099 | 0.220 |
| Achromatopsia (no color) | #575757 | 0.291 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4025FF
#4025FF
oklch(49.1% 0.289 273.3)
- #745F00
#745F00
oklch(49.2% 0.101 93.8)
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 #4025FF, closest first.
No curated palette has a color within ΔE 0.04 of #4025FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Royal Blue #3A2EFE ΔE 0.010
- Vivid Blue #152EFF ΔE 0.040
- Vibrant Blue #0339F8 ΔE 0.047
- Blue Purple #5A06EF ΔE 0.054
- Rich Blue #021BF9 ΔE 0.059
- Strong Blue #0C06F7 ΔE 0.065
- Primary Blue #0804F9 ΔE 0.065
- Purpley Blue #5F34E7 ΔE 0.067
Use #4025FF 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.