#434FB0
Closest named color: Blueberry (#464196). oklch(47.3% 0.153 273.7), rgb(67, 79, 176).
Aa
White text reads best on this color (7.03:1).
About this color
#434FB0 is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.153 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.052 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.153) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #434FB0 |
| RGB | rgb(67, 79, 176) |
| HSL | hsl(233, 45%, 48%) |
| OKLCH | oklch(47.3% 0.153 273.7) |
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 #434FB0 | 7.03:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #434FB0 | 2.98:1 | Fails | Lc 20.0 | Dividers and decoration only |
| #434FB0 text on white | 7.03:1 | AAA | Lc 84.1 | Fine for body text |
| #434FB0 text on black | 2.98:1 | Fails | Lc -17.9 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#899BEB
oklch(70.8% 0.119 273.4)
-
Step 500
500
#6E7FE4
oklch(63% 0.152 274)
-
Step 600
600
#5766D2
oklch(55.5% 0.165 273.8)
-
Step 700
700 (this color)
#434FB0
oklch(47.3% 0.153 273.7)
-
Step 800
800
#3B4693
oklch(42.8% 0.126 273.7)
-
Step 900
900
#323B75
oklch(37.6% 0.099 274)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#434FB0 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) | #065EB3 | 0.053 |
| Deuteranopia (no green cones) | #0054AE | 0.049 |
| Tritanopia (no blue cones) | #006678 | 0.131 |
| Achromatopsia (no color) | #595959 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434FB0
#434FB0
oklch(47.3% 0.153 273.7)
- #6E5A00
#6E5A00
oklch(47.4% 0.097 93.9)
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 #434FB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.052
- Blue With A Hint Of Purple #533CC6 ΔE 0.057
- Iris #6258C4 ΔE 0.061
- Twilight #4E518B ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.063
- Blue Blue #2242C7 ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.065
- Majorelle Blue #3F37C9 ΔE 0.066
Use #434FB0 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.