#211743
Closest named color: Dark Indigo (#1F0954). oklch(24.5% 0.08 289.7), rgb(33, 23, 67).
Aa
White text reads best on this color (16.55:1).
About this color
#211743 is a very dark, moderately saturated purple. In OKLCH its lightness is 25%, its chroma 0.080 and its hue 290°. 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 16.55:1.
| Hue family | Purples |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.26:1 |
| White text | 16.55:1 |
Values
| HEX | #211743 |
| RGB | rgb(33, 23, 67) |
| HSL | hsl(254, 49%, 18%) |
| OKLCH | oklch(24.5% 0.08 289.7) |
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 #211743 | 16.55:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #211743 | 1.26:1 | Fails | Lc 0.0 | Not readable |
| #211743 text on white | 16.55:1 | AAA | Lc 103.3 | Preferred for body text |
| #211743 text on black | 1.26:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#BFB7FA
oklch(81% 0.094 289.6)
-
Step 400
400
#A08EF7
oklch(70.7% 0.151 289.9)
-
Step 500
500
#8B6EF4
oklch(63.2% 0.193 289.7)
-
Step 600
600
#7651E2
oklch(55.5% 0.209 289.6)
-
Step 700
700
#6440C5
oklch(49.1% 0.195 289.7)
-
Step 800
800
#51369F
oklch(42.6% 0.161 289.6)
-
Step 900
900
#43317E
oklch(37.8% 0.125 289.9)
-
Step 950
950 (this color)
#211743
oklch(24.5% 0.08 289.7)
#211743 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) | #001F44 | 0.048 |
| Deuteranopia (no green cones) | #011E42 | 0.047 |
| Tritanopia (no blue cones) | #17212A | 0.065 |
| Achromatopsia (no color) | #1F1F1F | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #211743
#211743
oklch(24.5% 0.08 289.7)
- #222200
#222200
oklch(24.4% 0.053 109.8)
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 #211743, 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 0.052
- Dark Purple #35063E ΔE 0.055
- Midnight Purple #280137 ΔE 0.056
- Navy Blue #001146 ΔE 0.059
- Dark #1B2431 ΔE 0.059
- Very Dark Purple #2A0134 ΔE 0.060
- Deep Purple #36013F ΔE 0.062
Use #211743 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.