#3951AA
Closest named color: Blueberry (#464196). oklch(46.6% 0.145 268.8), rgb(57, 81, 170).
Aa
White text reads best on this color (7.16:1).
About this color
#3951AA is a medium-dark, vivid blue. In OKLCH its lightness is 47%, its chroma 0.145 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.050 away. White text reads best on it, at 7.16:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #3951AA |
| RGB | rgb(57, 81, 170) |
| HSL | hsl(227, 50%, 45%) |
| OKLCH | oklch(46.6% 0.145 268.8) |
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 #3951AA | 7.16:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #3951AA | 2.93:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #3951AA text on white | 7.16:1 | AAA | Lc 84.5 | Fine for body text |
| #3951AA text on black | 2.93:1 | Fails | Lc -17.5 | 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
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CED9F4
oklch(88.5% 0.039 267.9)
-
Step 300
300
#AEBFEF
oklch(80.8% 0.071 269.6)
-
Step 400
400
#849DE7
oklch(70.7% 0.112 269.2)
-
Step 500
500
#6683E0
oklch(63.1% 0.144 269)
-
Step 600
600
#4E6BCE
oklch(55.7% 0.156 268.7)
-
Step 700
700 (this color)
#3951AA
oklch(46.6% 0.145 268.8)
-
Step 800
800
#344990
oklch(42.8% 0.12 268.6)
-
Step 900
900
#2D3D73
oklch(37.6% 0.094 269.1)
-
Step 950
950
#1A2443
oklch(26.9% 0.06 268.7)
#3951AA 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) | #1A5DAD | 0.037 |
| Deuteranopia (no green cones) | #0053A8 | 0.038 |
| Tritanopia (no blue cones) | #006675 | 0.121 |
| Achromatopsia (no color) | #585858 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3951AA
#3951AA
oklch(46.6% 0.145 268.8)
- #6F5600
#6F5600
oklch(46.6% 0.095 89.1)
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 #3951AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.051
- Dusk Blue #26538D ΔE 0.053
- Twilight #4E518B ΔE 0.057
- Cobalt #1E488F ΔE 0.059
- Dusky Blue #475F94 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.065
- Light Navy Blue #2E5A88 ΔE 0.066
Use #3951AA 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.