#4637AB
Closest named color: Blueberry (#464196). oklch(42.8% 0.177 281.8), rgb(70, 55, 171).
Aa
White text reads best on this color (8.76:1).
About this color
#4637AB is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.177 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.042 away. White text reads best on it, at 8.76:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.177) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.39:1 |
| White text | 8.76:1 |
Values
| HEX | #4637AB |
| RGB | rgb(70, 55, 171) |
| HSL | hsl(248, 51%, 44%) |
| OKLCH | oklch(42.8% 0.177 281.8) |
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 #4637AB | 8.76:1 | AAA | Lc -93.9 | Preferred for body text |
| Black text on #4637AB | 2.39:1 | Fails | Lc 14.6 | Not readable |
| #4637AB text on white | 8.76:1 | AAA | Lc 89.4 | Fine for body text |
| #4637AB text on black | 2.39:1 | Fails | Lc -12.8 | Not readable |
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
#F4F5FF
oklch(97.2% 0.013 281.6)
-
Step 100
100
#E6E8FE
oklch(93.6% 0.03 281.7)
-
Step 200
200
#D2D5FF
oklch(88.4% 0.058 281.9)
-
Step 300
300
#B6B9FF
oklch(80.9% 0.099 282.1)
-
Step 400
400
#9292FF
oklch(70.8% 0.157 281.6)
-
Step 500
500
#7A71FF
oklch(63.1% 0.204 281.7)
-
Step 600
600
#6652F2
oklch(55.6% 0.228 281.7)
-
Step 700
700
#5640D3
oklch(49.1% 0.213 281.9)
-
Step 800
800 (this color)
#4637AB
oklch(42.8% 0.177 281.8)
-
Step 900
900
#393187
oklch(37.6% 0.138 281.6)
-
Step 950
950
#211E4F
oklch(27% 0.087 281.6)
#4637AB 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) | #004FAF | 0.074 |
| Deuteranopia (no green cones) | #0047A9 | 0.067 |
| Tritanopia (no blue cones) | #04556C | 0.150 |
| Achromatopsia (no color) | #4B4B4B | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4637AB
#4637AB
oklch(42.8% 0.177 281.8)
- #5A5000
#5A5000
oklch(42.8% 0.089 101.1)
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 #4637AB, closest first.
No curated palette has a color within ΔE 0.04 of #4637AB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.042
- Majorelle Blue #3F37C9 ΔE 0.049
- Sapphire #2138AB ΔE 0.050
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.055
- Indigo Blue #3A18B1 ΔE 0.057
- Blurple #5539CC ΔE 0.058
- Imperial Purple #480CA8 ΔE 0.061
Use #4637AB 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.