#211B40
Closest named color: Oxford Blue (#1B263B). oklch(25.1% 0.068 288), rgb(33, 27, 64).
Aa
White text reads best on this color (16.21:1).
About this color
#211B40 is a dark, muted purple. In OKLCH its lightness is 25%, its chroma 0.068 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.039 away. White text reads best on it, at 16.21:1.
| Hue family | Purples |
| Lightness | dark (25%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.21:1 |
Values
| HEX | #211B40 |
| RGB | rgb(33, 27, 64) |
| HSL | hsl(250, 41%, 18%) |
| OKLCH | oklch(25.1% 0.068 288) |
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 #211B40 | 16.21:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #211B40 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #211B40 text on white | 16.21:1 | AAA | Lc 103.1 | Preferred for body text |
| #211B40 text on black | 1.29:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F9
oklch(93.7% 0.023 288.7)
-
Step 200
200
#D7D5F6
oklch(88.5% 0.045 288.2)
-
Step 300
300
#BDB9F2
oklch(80.9% 0.08 287.7)
-
Step 400
400
#9D93EC
oklch(70.8% 0.128 287.8)
-
Step 500
500
#8775E6
oklch(63.2% 0.165 288.1)
-
Step 600
600
#725BD3
oklch(55.6% 0.177 288.1)
-
Step 700
700
#604AB7
oklch(49.2% 0.165 288.1)
-
Step 800
800
#4E3D94
oklch(42.7% 0.137 288.2)
-
Step 900
900
#403576
oklch(37.6% 0.107 287.9)
-
Step 950
950 (this color)
#211B40
oklch(25.1% 0.068 288)
#211B40 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) | #0B2141 | 0.035 |
| Deuteranopia (no green cones) | #0B1F3F | 0.034 |
| Tritanopia (no blue cones) | #18232A | 0.057 |
| Achromatopsia (no color) | #202020 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211B40
#211B40
oklch(25.1% 0.068 288)
- #252300
#252300
oklch(25% 0.054 106.5)
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 #211B40, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.039
- Dark #1B2431 ΔE 0.046
- Dark Indigo #1F0954 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.056
- Dark Purple #35063E ΔE 0.060
- Jet #212529 ΔE 0.062
- Space Cadet #2B2D42 ΔE 0.062
- Navy Blue #001146 ΔE 0.065
Use #211B40 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.