#404DBC
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(47.7% 0.173 272.9), rgb(64, 77, 188).
Aa
White text reads best on this color (6.98:1).
About this color
#404DBC is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.173 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.045 away. White text reads best on it, at 6.98:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 3.00:1 |
| White text | 6.98:1 |
Values
| HEX | #404DBC |
| RGB | rgb(64, 77, 188) |
| HSL | hsl(234, 49%, 49%) |
| OKLCH | oklch(47.7% 0.173 272.9) |
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 #404DBC | 6.98:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #404DBC | 3.00:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #404DBC text on white | 6.98:1 | AA | Lc 83.7 | Fine for body text |
| #404DBC text on black | 3.00:1 | AA large text | Lc -18.2 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F9
oklch(88.5% 0.047 272.1)
-
Step 300
300
#AEBEF8
oklch(81% 0.084 272.5)
-
Step 400
400
#859AF4
oklch(70.8% 0.134 272.6)
-
Step 500
500
#697DF0
oklch(63.1% 0.172 273.1)
-
Step 600
600
#5263DE
oklch(55.5% 0.187 272.8)
-
Step 700
700 (this color)
#404DBC
oklch(47.7% 0.173 272.9)
-
Step 800
800
#37439C
oklch(42.6% 0.144 272.9)
-
Step 900
900
#2F3A7C
oklch(37.7% 0.112 272.8)
-
Step 950
950
#1B2249
oklch(26.9% 0.072 272.9)
#404DBC 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) | #005FC0 | 0.055 |
| Deuteranopia (no green cones) | #0054BA | 0.045 |
| Tritanopia (no blue cones) | #00687D | 0.142 |
| Achromatopsia (no color) | #595959 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404DBC
#404DBC
oklch(47.7% 0.173 272.9)
- #705A00
#705A00
oklch(47.6% 0.097 92.2)
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 #404DBC, 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 0.045
- Blue Blue #2242C7 ΔE 0.048
- Majorelle Blue #3F37C9 ΔE 0.050
- Blurple #5539CC ΔE 0.053
- Warm Blue #4B57DB ΔE 0.056
- Bluey Purple #6241C7 ΔE 0.057
- Iris #6258C4 ΔE 0.060
- Blueberry #464196 ΔE 0.066
Use #404DBC 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.