#434FAC
Closest named color: Blueberry (#464196). oklch(47% 0.148 273.8), rgb(67, 79, 172).
Aa
White text reads best on this color (7.11:1).
About this color
#434FAC is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.148 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.048 away. White text reads best on it, at 7.11:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.95:1 |
| White text | 7.11:1 |
Values
| HEX | #434FAC |
| RGB | rgb(67, 79, 172) |
| HSL | hsl(233, 44%, 47%) |
| OKLCH | oklch(47% 0.148 273.8) |
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 #434FAC | 7.11:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #434FAC | 2.95:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #434FAC text on white | 7.11:1 | AAA | Lc 84.4 | Fine for body text |
| #434FAC text on black | 2.95:1 | Fails | Lc -17.6 | 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
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B2BEF0
oklch(81% 0.072 274.2)
-
Step 400
400
#8A9BE8
oklch(70.7% 0.114 273.6)
-
Step 500
500
#6F80E1
oklch(63.1% 0.146 274)
-
Step 600
600
#5867CF
oklch(55.6% 0.16 273.9)
-
Step 700
700 (this color)
#434FAC
oklch(47% 0.148 273.8)
-
Step 800
800
#3B4691
oklch(42.6% 0.123 273.7)
-
Step 900
900
#323C74
oklch(37.8% 0.096 273.3)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#434FAC 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) | #135DAF | 0.049 |
| Deuteranopia (no green cones) | #0054AA | 0.050 |
| Tritanopia (no blue cones) | #006576 | 0.127 |
| Achromatopsia (no color) | #585858 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434FAC
#434FAC
oklch(47% 0.148 273.8)
- #6D5900
#6D5900
oklch(47% 0.096 93.7)
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 #434FAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.048
- Twilight #4E518B ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.058
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Dusk Blue #26538D ΔE 0.063
- Dusky Blue #475F94 ΔE 0.064
- Iris #6258C4 ΔE 0.065
- Dark Slate Blue #483D8B ΔE 0.067
Use #434FAC 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.