#3A3CA6
Closest named color: Sapphire (#2138AB). oklch(42.3% 0.166 275.8), rgb(58, 60, 166).
Aa
White text reads best on this color (8.83:1).
About this color
#3A3CA6 is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.166 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.034 away. White text reads best on it, at 8.83:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.37:1 |
| White text | 8.83:1 |
Values
| HEX | #3A3CA6 |
| RGB | rgb(58, 60, 166) |
| HSL | hsl(239, 48%, 44%) |
| OKLCH | oklch(42.3% 0.166 275.8) |
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 #3A3CA6 | 8.83:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #3A3CA6 | 2.37:1 | Fails | Lc 14.3 | Not readable |
| #3A3CA6 text on white | 8.83:1 | AAA | Lc 89.7 | Fine for body text |
| #3A3CA6 text on black | 2.37:1 | Fails | Lc -12.6 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CFD7FE
oklch(88.6% 0.054 276.1)
-
Step 300
300
#AFBCFF
oklch(80.9% 0.096 275.6)
-
Step 400
400
#8796FF
oklch(70.7% 0.154 275.6)
-
Step 500
500
#6C77FE
oklch(63.1% 0.198 275.7)
-
Step 600
600
#575BEE
oklch(55.6% 0.216 275.6)
-
Step 700
700
#4849CF
oklch(49.1% 0.201 275.7)
-
Step 800
800 (this color)
#3A3CA6
oklch(42.3% 0.166 275.8)
-
Step 900
900
#313684
oklch(37.7% 0.129 275.5)
-
Step 950
950
#1D204E
oklch(27% 0.083 276.5)
#3A3CA6 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) | #004FA9 | 0.057 |
| Deuteranopia (no green cones) | #0045A4 | 0.048 |
| Tritanopia (no blue cones) | #00576B | 0.138 |
| Achromatopsia (no color) | #4A4A4A | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3CA6
#3A3CA6
oklch(42.3% 0.166 275.8)
- #5C4D00
#5C4D00
oklch(42.3% 0.087 96.2)
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 #3A3CA6, closest first.
No curated palette has a color within ΔE 0.04 of #3A3CA6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.034
- Blueberry #464196 ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.050
- Cobalt #1E488F ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.057
- Blue Blue #2242C7 ΔE 0.059
- Indigo Blue #3A18B1 ΔE 0.062
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
Use #3A3CA6 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.