#211B4A
Closest named color: Dark Indigo (#1F0954). oklch(25.9% 0.084 284.7), rgb(33, 27, 74).
Aa
White text reads best on this color (15.90:1).
About this color
#211B4A is a dark, moderately saturated purple. In OKLCH its lightness is 26%, its chroma 0.084 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.043 away. White text reads best on it, at 15.90:1.
| Hue family | Purples |
| Lightness | dark (26%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.32:1 |
| White text | 15.90:1 |
Values
| HEX | #211B4A |
| RGB | rgb(33, 27, 74) |
| HSL | hsl(248, 47%, 20%) |
| OKLCH | oklch(25.9% 0.084 284.7) |
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 #211B4A | 15.90:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #211B4A | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #211B4A text on white | 15.90:1 | AAA | Lc 102.7 | Preferred for body text |
| #211B4A text on black | 1.32:1 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E7E8FD
oklch(93.7% 0.028 283.7)
-
Step 200
200
#D4D5FD
oklch(88.5% 0.055 284.1)
-
Step 300
300
#B9B8FF
oklch(80.9% 0.1 284.6)
-
Step 400
400
#9790FF
oklch(70.8% 0.159 284.4)
-
Step 500
500
#816FFD
oklch(63.1% 0.203 284.7)
-
Step 600
600
#6D51EC
oklch(55.5% 0.221 284.9)
-
Step 700
700
#5B40CD
oklch(49% 0.206 284.6)
-
Step 800
800
#4A37A6
oklch(42.7% 0.17 284.5)
-
Step 900
900
#3D3184
oklch(37.7% 0.133 284.6)
-
Step 950
950 (this color)
#211B4A
oklch(25.9% 0.084 284.7)
#211B4A 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) | #00234C | 0.044 |
| Deuteranopia (no green cones) | #002149 | 0.043 |
| Tritanopia (no blue cones) | #12262F | 0.071 |
| Achromatopsia (no color) | #222222 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211B4A
#211B4A
oklch(25.9% 0.084 284.7)
- #282500
#282500
oklch(25.9% 0.055 105)
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 #211B4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.048
- Dark #1B2431 ΔE 0.061
- Dark Purple #35063E ΔE 0.063
- Navy Blue #001146 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.065
- Marine #042E60 ΔE 0.067
- Deep Purple #36013F ΔE 0.070
Use #211B4A 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.