#4252AB
Closest named color: Denim Blue (#3B5B92). oklch(47.5% 0.143 272.2), rgb(66, 82, 171).
Aa
White text reads best on this color (6.93:1).
About this color
#4252AB is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.143 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.051 away. White text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #4252AB |
| RGB | rgb(66, 82, 171) |
| HSL | hsl(231, 44%, 46%) |
| OKLCH | oklch(47.5% 0.143 272.2) |
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 #4252AB | 6.93:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #4252AB | 3.02:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #4252AB text on white | 6.93:1 | AA | Lc 83.7 | Fine for body text |
| #4252AB text on black | 3.02:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BFEE
oklch(81% 0.068 271.9)
-
Step 400
400
#899CE6
oklch(70.8% 0.111 272.3)
-
Step 500
500
#6D82DE
oklch(63.2% 0.14 272.1)
-
Step 600
600
#5669CC
oklch(55.6% 0.154 272.3)
-
Step 700
700 (this color)
#4252AB
oklch(47.5% 0.143 272.2)
-
Step 800
800
#3A488F
oklch(42.8% 0.118 272.2)
-
Step 900
900
#313D72
oklch(37.8% 0.092 271.8)
-
Step 950
950
#1D2443
oklch(27.1% 0.058 272.4)
#4252AB 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) | #1F5EAE | 0.041 |
| Deuteranopia (no green cones) | #0055A9 | 0.048 |
| Tritanopia (no blue cones) | #006776 | 0.124 |
| Achromatopsia (no color) | #5A5A5A | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4252AB
#4252AB
oklch(47.5% 0.143 272.2)
- #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 #4252AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.051
- Blueberry #464196 ΔE 0.052
- Twilight #4E518B ΔE 0.054
- Dusky Blue #475F94 ΔE 0.057
- Dusk Blue #26538D ΔE 0.060
- Iris #6258C4 ΔE 0.064
- Mid Blue #276AB3 ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.068
Use #4252AB 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.