#221840
Closest named color: Oxford Blue (#1B263B). oklch(24.6% 0.073 291.6), rgb(34, 24, 64).
Aa
White text reads best on this color (16.50:1).
About this color
#221840 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.073 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.048 away. White text reads best on it, at 16.50:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.50:1 |
Values
| HEX | #221840 |
| RGB | rgb(34, 24, 64) |
| HSL | hsl(255, 45%, 17%) |
| OKLCH | oklch(24.6% 0.073 291.6) |
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 #221840 | 16.50:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #221840 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #221840 text on white | 16.50:1 | AAA | Lc 103.3 | Preferred for body text |
| #221840 text on black | 1.27:1 | 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 950.
-
Step 50
50
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F5
oklch(80.9% 0.087 291.7)
-
Step 400
400
#A28FEF
oklch(70.6% 0.138 291.5)
-
Step 500
500
#8D70EA
oklch(63.1% 0.177 291.4)
-
Step 600
600
#7955D8
oklch(55.7% 0.192 291.6)
-
Step 700
700
#6644BB
oklch(49.1% 0.178 291.6)
-
Step 800
800
#533998
oklch(42.8% 0.148 291.5)
-
Step 900
900
#443279
oklch(37.7% 0.116 291.5)
-
Step 950
950 (this color)
#221840
oklch(24.6% 0.073 291.6)
#221840 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) | #052041 | 0.045 |
| Deuteranopia (no green cones) | #071E3F | 0.042 |
| Tritanopia (no blue cones) | #1A2029 | 0.058 |
| Achromatopsia (no color) | #1F1F1F | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #221840
#221840
oklch(24.6% 0.073 291.6)
- #222300
#222300
oklch(24.7% 0.054 111.4)
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 #221840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.048
- Dark Indigo #1F0954 ΔE 0.050
- Dark #1B2431 ΔE 0.054
- Dark Purple #35063E ΔE 0.054
- Midnight Purple #280137 ΔE 0.057
- Rich Black #0D1B2A ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.059
- Eggplant #380835 ΔE 0.060
Use #221840 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.