#404EC3
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(48.4% 0.181 272.5), rgb(64, 78, 195).
Aa
White text reads best on this color (6.78:1).
About this color
#404EC3 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.181 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.043 away. White text reads best on it, at 6.78:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.181) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.09:1 |
| White text | 6.78:1 |
Values
| HEX | #404EC3 |
| RGB | rgb(64, 78, 195) |
| HSL | hsl(234, 52%, 51%) |
| OKLCH | oklch(48.4% 0.181 272.5) |
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 #404EC3 | 6.78:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #404EC3 | 3.09:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #404EC3 text on white | 6.78:1 | AA | Lc 82.9 | Fine for body text |
| #404EC3 text on black | 3.09:1 | AA large text | Lc -19.0 | 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 700.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEFA
oklch(81% 0.087 272.1)
-
Step 400
400
#8399F8
oklch(70.7% 0.141 272.5)
-
Step 500
500
#677CF4
oklch(63% 0.18 272.7)
-
Step 600
600
#5062E3
oklch(55.6% 0.195 272.4)
-
Step 700
700 (this color)
#404EC3
oklch(48.4% 0.181 272.5)
-
Step 800
800
#36429F
oklch(42.6% 0.15 272.7)
-
Step 900
900
#2E397F
oklch(37.7% 0.118 272.7)
-
Step 950
950
#1B224A
oklch(27% 0.074 273)
#404EC3 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) | #0061C7 | 0.055 |
| Deuteranopia (no green cones) | #0055C1 | 0.044 |
| Tritanopia (no blue cones) | #006B81 | 0.148 |
| Achromatopsia (no color) | #5B5B5B | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404EC3
#404EC3
oklch(48.4% 0.181 272.5)
- #735C00
#735C00
oklch(48.4% 0.099 91.8)
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 #404EC3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue With A Hint Of Purple #533CC6 ΔE 0.043
- Warm Blue #4B57DB ΔE 0.046
- Blue Blue #2242C7 ΔE 0.046
- Majorelle Blue #3F37C9 ΔE 0.048
- Blurple #5539CC ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.055
- Iris #6258C4 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.072
Use #404EC3 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.