#3F344D
Closest named color: Onyx (#343A40). oklch(34.8% 0.045 304.3), rgb(63, 52, 77).
Aa
White text reads best on this color (11.60:1).
About this color
#3F344D is a dark, muted purple. In OKLCH its lightness is 35%, its chroma 0.045 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.039 away. White text reads best on it, at 11.60:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | muted (0.045) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #3F344D |
| RGB | rgb(63, 52, 77) |
| HSL | hsl(266, 19%, 25%) |
| OKLCH | oklch(34.8% 0.045 304.3) |
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 #3F344D | 11.60:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #3F344D | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #3F344D text on white | 11.60:1 | AAA | Lc 96.7 | Preferred for body text |
| #3F344D text on black | 1.80:1 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DCD6E3
oklch(88.5% 0.019 306.6)
-
Step 300
300
#C5BCD3
oklch(81% 0.033 303.4)
-
Step 400
400
#A899BC
oklch(70.8% 0.053 304.5)
-
Step 500
500
#937FAC
oklch(63.1% 0.07 304.8)
-
Step 600
600
#7D6897
oklch(55.6% 0.075 304.5)
-
Step 700
700
#695781
oklch(49.1% 0.069 303.6)
-
Step 800
800
#564769
oklch(42.7% 0.058 304.3)
-
Step 900
900 (this color)
#3F344D
oklch(34.8% 0.045 304.3)
-
Step 950
950
#292332
oklch(27% 0.029 302.8)
#3F344D 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) | #2F384E | 0.028 |
| Deuteranopia (no green cones) | #31394C | 0.027 |
| Tritanopia (no blue cones) | #3D383D | 0.035 |
| Achromatopsia (no color) | #393939 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F344D
#3F344D
oklch(34.8% 0.045 304.3)
- #353E23
#353E23
oklch(34.8% 0.046 123.8)
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 #3F344D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.039
- Gunmetal #293241 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.051
- Charcoal Grey #3C4142 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.053
- Dark Grey Blue #29465B ΔE 0.060
- Charcoal #264653 ΔE 0.062
Use #3F344D 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.