#34287B
Closest named color: Midnight Blue (#191970). oklch(34.5% 0.135 283.4), rgb(52, 40, 123).
Aa
White text reads best on this color (12.09:1).
About this color
#34287B is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.135 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.063 away. White text reads best on it, at 12.09:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.73:1 |
| White text | 12.09:1 |
Values
| HEX | #34287B |
| RGB | rgb(52, 40, 123) |
| HSL | hsl(249, 51%, 32%) |
| OKLCH | oklch(34.5% 0.135 283.4) |
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 #34287B | 12.09:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #34287B | 1.73:1 | Fails | Lc 0.0 | Not readable |
| #34287B text on white | 12.09:1 | AAA | Lc 97.2 | Preferred for body text |
| #34287B text on black | 1.73:1 | 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
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D3D5FE
oklch(88.5% 0.056 283)
-
Step 300
300
#B8B9FF
oklch(81% 0.098 283.3)
-
Step 400
400
#9591FF
oklch(70.8% 0.158 283.2)
-
Step 500
500
#7E6FFF
oklch(63% 0.206 283.5)
-
Step 600
600
#6A52EF
oklch(55.7% 0.224 283.3)
-
Step 700
700
#5941D0
oklch(49.2% 0.208 283.3)
-
Step 800
800
#4837A8
oklch(42.8% 0.172 283.2)
-
Step 900
900 (this color)
#34287B
oklch(34.5% 0.135 283.4)
-
Step 950
950
#221E4E
oklch(27% 0.085 282.8)
#34287B 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) | #00397E | 0.061 |
| Deuteranopia (no green cones) | #003379 | 0.057 |
| Tritanopia (no blue cones) | #123D4D | 0.114 |
| Achromatopsia (no color) | #363636 | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34287B
#34287B
oklch(34.5% 0.135 283.4)
- #403A00
#403A00
oklch(34.4% 0.072 103)
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 #34287B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.063
- Indigo #4B0082 ΔE 0.067
- Dark Slate Blue #483D8B ΔE 0.070
- Marine Blue #01386A ΔE 0.071
- Marine #042E60 ΔE 0.075
- Royal Purple #4B006E ΔE 0.077
- Twilight Blue #0A437A ΔE 0.078
- Royal #0C1793 ΔE 0.078
Use #34287B 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.