#434CB3
Closest named color: Blue With A Hint Of Purple (#533CC6). oklch(46.9% 0.162 274.6), rgb(67, 76, 179).
Aa
White text reads best on this color (7.18:1).
About this color
#434CB3 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.162 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Blue With A Hint Of Purple (#533CC6), ΔE 0.049 away. White text reads best on it, at 7.18:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Blue With A Hint Of Purple (#533CC6) |
| Black text | 2.92:1 |
| White text | 7.18:1 |
Values
| HEX | #434CB3 |
| RGB | rgb(67, 76, 179) |
| HSL | hsl(235, 46%, 48%) |
| OKLCH | oklch(46.9% 0.162 274.6) |
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 #434CB3 | 7.18:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #434CB3 | 2.92:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #434CB3 text on white | 7.18:1 | AAA | Lc 84.5 | Fine for body text |
| #434CB3 text on black | 2.92:1 | Fails | Lc -17.4 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F7
oklch(88.6% 0.044 274)
-
Step 300
300
#B1BDF4
oklch(80.8% 0.079 274.9)
-
Step 400
400
#899AEE
oklch(70.8% 0.124 274.1)
-
Step 500
500
#6E7EE9
oklch(63.1% 0.16 274.5)
-
Step 600
600
#5864D7
oklch(55.5% 0.175 274.7)
-
Step 700
700 (this color)
#434CB3
oklch(46.9% 0.162 274.6)
-
Step 800
800
#3B4497
oklch(42.7% 0.135 274.5)
-
Step 900
900
#323A78
oklch(37.6% 0.105 274.7)
-
Step 950
950
#1D2346
oklch(27.1% 0.065 273.9)
#434CB3 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) | #005CB6 | 0.056 |
| Deuteranopia (no green cones) | #0053B1 | 0.050 |
| Tritanopia (no blue cones) | #006578 | 0.137 |
| Achromatopsia (no color) | #575757 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434CB3
#434CB3
oklch(46.9% 0.162 274.6)
- #6C5900
#6C5900
oklch(46.9% 0.096 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 #434CB3, 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 0.049
- Blueberry #464196 ΔE 0.052
- Blue Blue #2242C7 ΔE 0.056
- Majorelle Blue #3F37C9 ΔE 0.057
- Blurple #5539CC ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.060
- Iris #6258C4 ΔE 0.063
- Warm Blue #4B57DB ΔE 0.069
Use #434CB3 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.