#4243AF
Closest named color: Blueberry (#464196). oklch(44.9% 0.168 276.8), rgb(66, 67, 175).
Aa
White text reads best on this color (7.91:1).
About this color
#4243AF is a dark, vivid blue. In OKLCH its lightness is 45%, its chroma 0.168 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.041 away. White text reads best on it, at 7.91:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #4243AF |
| RGB | rgb(66, 67, 175) |
| HSL | hsl(239, 45%, 47%) |
| OKLCH | oklch(44.9% 0.168 276.8) |
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 #4243AF | 7.91:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #4243AF | 2.65:1 | Fails | Lc 17.0 | Dividers and decoration only |
| #4243AF text on white | 7.91:1 | AAA | Lc 87.0 | Fine for body text |
| #4243AF text on black | 2.65:1 | Fails | Lc -15.1 | 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 800.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#B0BBFF
oklch(80.8% 0.097 276.9)
-
Step 400
400
#8995FF
oklch(70.7% 0.154 276.8)
-
Step 500
500
#6F76FF
oklch(63.2% 0.2 276.8)
-
Step 600
600
#5A59EE
oklch(55.5% 0.218 276.9)
-
Step 700
700
#4B48D0
oklch(49.2% 0.203 276.9)
-
Step 800
800 (this color)
#4243AF
oklch(44.9% 0.168 276.8)
-
Step 900
900
#333585
oklch(37.7% 0.131 277)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#4243AF 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) | #0056B3 | 0.061 |
| Deuteranopia (no green cones) | #004DAD | 0.054 |
| Tritanopia (no blue cones) | #005E72 | 0.143 |
| Achromatopsia (no color) | #515151 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4243AF
#4243AF
oklch(44.9% 0.168 276.8)
- #645400
#645400
oklch(44.8% 0.092 96.3)
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 #4243AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.041
- Blue With A Hint Of Purple #533CC6 ΔE 0.046
- Majorelle Blue #3F37C9 ΔE 0.048
- Blue Blue #2242C7 ΔE 0.053
- Sapphire #2138AB ΔE 0.053
- Blurple #5539CC ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.060
- Bluey Purple #6241C7 ΔE 0.063
Use #4243AF 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.