#21193F
Closest named color: Oxford Blue (#1B263B). oklch(24.6% 0.07 290), rgb(33, 25, 63).
Aa
White text reads best on this color (16.46:1).
About this color
#21193F is a very dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.070 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.044 away. White text reads best on it, at 16.46:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.27:1 |
| White text | 16.46:1 |
Values
| HEX | #21193F |
| RGB | rgb(33, 25, 63) |
| HSL | hsl(253, 43%, 17%) |
| OKLCH | oklch(24.6% 0.07 290) |
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 #21193F | 16.46:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #21193F | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #21193F text on white | 16.46:1 | AAA | Lc 103.3 | Preferred for body text |
| #21193F 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
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D8D5F6
oklch(88.6% 0.045 289.6)
-
Step 300
300
#BFB8F3
oklch(80.9% 0.083 289.8)
-
Step 400
400
#A091ED
oklch(70.7% 0.133 290.1)
-
Step 500
500
#8A73E7
oklch(63.1% 0.169 289.8)
-
Step 600
600
#7658D5
oklch(55.6% 0.184 290.2)
-
Step 700
700
#6347B8
oklch(49% 0.17 290.1)
-
Step 800
800
#513B95
oklch(42.7% 0.141 290.4)
-
Step 900
900
#423477
oklch(37.7% 0.11 289.7)
-
Step 950
950 (this color)
#21193F
oklch(24.6% 0.07 290)
#21193F 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) | #082040 | 0.039 |
| Deuteranopia (no green cones) | #091E3E | 0.038 |
| Tritanopia (no blue cones) | #192129 | 0.057 |
| Achromatopsia (no color) | #1F1F1F | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #21193F
#21193F
oklch(24.6% 0.07 290)
- #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 #21193F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.044
- Dark #1B2431 ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.053
- Rich Black #0D1B2A ΔE 0.055
- Dark Purple #35063E ΔE 0.057
- Midnight Purple #280137 ΔE 0.060
- Very Dark Purple #2A0134 ΔE 0.062
- Eggplant #380835 ΔE 0.062
Use #21193F 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.