#3A375F
Closest named color: Prussian Blue (#1D3557). oklch(35.9% 0.068 285.9), rgb(58, 55, 95).
Aa
White text reads best on this color (11.10:1).
About this color
#3A375F is a dark, muted purple. In OKLCH its lightness is 36%, its chroma 0.068 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.046 away. White text reads best on it, at 11.10:1.
| Hue family | Purples |
| Lightness | dark (36%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.89:1 |
| White text | 11.10:1 |
Values
| HEX | #3A375F |
| RGB | rgb(58, 55, 95) |
| HSL | hsl(245, 27%, 29%) |
| OKLCH | oklch(35.9% 0.068 285.9) |
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 #3A375F | 11.10:1 | AAA | Lc -99.4 | Preferred for body text |
| Black text on #3A375F | 1.89:1 | Fails | Lc 8.3 | Not readable |
| #3A375F text on white | 11.10:1 | AAA | Lc 95.6 | Preferred for body text |
| #3A375F text on black | 1.89:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E9F4
oklch(93.7% 0.015 286.1)
-
Step 200
200
#D7D7EC
oklch(88.6% 0.029 285.8)
-
Step 300
300
#BDBCE1
oklch(80.8% 0.052 286.4)
-
Step 400
400
#9C99D2
oklch(70.6% 0.083 286.5)
-
Step 500
500
#8480C6
oklch(63.2% 0.104 285.6)
-
Step 600
600
#6E68B2
oklch(55.6% 0.113 285.8)
-
Step 700
700
#5C569A
oklch(49.1% 0.107 285.8)
-
Step 800
800
#4B477C
oklch(42.7% 0.086 285.6)
-
Step 900
900 (this color)
#3A375F
oklch(35.9% 0.068 285.9)
-
Step 950
950
#25233B
oklch(27% 0.044 286.9)
#3A375F 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) | #2A3D61 | 0.028 |
| Deuteranopia (no green cones) | #293A5E | 0.027 |
| Tritanopia (no blue cones) | #303F46 | 0.059 |
| Achromatopsia (no color) | #3C3C3C | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A375F
#3A375F
oklch(35.9% 0.068 285.9)
- #423F0C
#423F0C
oklch(36% 0.069 106)
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 #3A375F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Onyx #343A40 ΔE 0.060
- Gunmetal #293241 ΔE 0.062
- Charcoal #264653 ΔE 0.062
- Marine Blue #01386A ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.063
Use #3A375F 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.