#3A3B4E
Closest named color: Onyx (#343A40). oklch(35.9% 0.033 282.3), rgb(58, 59, 78).
Aa
White text reads best on this color (10.96:1).
About this color
#3A3B4E is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.033 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.027 away. White text reads best on it, at 10.96:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.91:1 |
| White text | 10.96:1 |
Values
| HEX | #3A3B4E |
| RGB | rgb(58, 59, 78) |
| HSL | hsl(237, 15%, 27%) |
| OKLCH | oklch(35.9% 0.033 282.3) |
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 #3A3B4E | 10.96:1 | AAA | Lc -99.2 | Preferred for body text |
| Black text on #3A3B4E | 1.91:1 | Fails | Lc 8.5 | Not readable |
| #3A3B4E text on white | 10.96:1 | AAA | Lc 95.4 | Preferred for body text |
| #3A3B4E text on black | 1.91:1 | Fails | Lc 0.0 | 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 900.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BEBFD1
oklch(80.9% 0.025 283.3)
-
Step 400
400
#9C9EB9
oklch(70.7% 0.039 282)
-
Step 500
500
#8486A8
oklch(63.1% 0.051 282.2)
-
Step 600
600
#6E7093
oklch(55.7% 0.054 281.9)
-
Step 700
700
#5C5D7D
oklch(49% 0.051 282.9)
-
Step 800
800
#4B4C66
oklch(42.6% 0.043 282.7)
-
Step 900
900 (this color)
#3A3B4E
oklch(35.9% 0.033 282.3)
-
Step 950
950
#252531
oklch(27% 0.022 284.8)
#3A3B4E 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) | #363D4F | 0.008 |
| Deuteranopia (no green cones) | #353C4D | 0.009 |
| Tritanopia (no blue cones) | #353E41 | 0.029 |
| Achromatopsia (no color) | #3C3C3C | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A3B4E
#3A3B4E
oklch(35.9% 0.033 282.3)
- #403E2A
#403E2A
oklch(36% 0.032 103.1)
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 #3A3B4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.027
- Charcoal Grey #3C4142 ΔE 0.033
- Dark Blue Grey #1F3B4D ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.041
- Gunmetal #293241 ΔE 0.046
- Prussian Blue #1D3557 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.055
Use #3A3B4E 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.