#1B1024
Closest named color: Rich Black (#0D1B2A). oklch(19.8% 0.042 308.4), rgb(27, 16, 36).
Aa
White text reads best on this color (18.32:1).
About this color
#1B1024 is a very dark, muted purple. In OKLCH its lightness is 20%, its chroma 0.042 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.042 away. White text reads best on it, at 18.32:1.
| Hue family | Purples |
| Lightness | very dark (20%) |
| Chroma | muted (0.042) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.32:1 |
Values
| HEX | #1B1024 |
| RGB | rgb(27, 16, 36) |
| HSL | hsl(273, 38%, 10%) |
| OKLCH | oklch(19.8% 0.042 308.4) |
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 #1B1024 | 18.32:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #1B1024 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #1B1024 text on white | 18.32:1 | AAA | Lc 104.9 | Preferred for body text |
| #1B1024 text on black | 1.14:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#ECE7F1
oklch(93.5% 0.014 308.3)
-
Step 200
200
#DED5E7
oklch(88.6% 0.026 308.1)
-
Step 300
300
#CAB9DA
oklch(81% 0.049 308.4)
-
Step 400
400
#AE94C7
oklch(70.8% 0.078 307.7)
-
Step 500
500
#9B78B8
oklch(63.1% 0.101 308.8)
-
Step 600
600
#8560A4
oklch(55.5% 0.11 308.2)
-
Step 700
700
#714F8D
oklch(49% 0.103 308.3)
-
Step 800
800
#5C4172
oklch(42.6% 0.085 308.5)
-
Step 900
900
#4B385C
oklch(37.7% 0.064 307.8)
-
Step 950
950 (this color)
#1B1024
oklch(19.8% 0.042 308.4)
#1B1024 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) | #0B1425 | 0.032 |
| Deuteranopia (no green cones) | #0E1523 | 0.029 |
| Tritanopia (no blue cones) | #1A1318 | 0.029 |
| Achromatopsia (no color) | #151515 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B1024
#1B1024
oklch(19.8% 0.042 308.4)
- #101904
#101904
oklch(19.8% 0.041 128.1)
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 #1B1024, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.042
- Rich Navy #001219 ΔE 0.058
- Very Dark Purple #2A0134 ΔE 0.059
- Midnight Purple #280137 ΔE 0.060
- Almost Black #070D0D ΔE 0.065
- Dark #1B2431 ΔE 0.068
- Jet #212529 ΔE 0.074
- Eggplant #380835 ΔE 0.076
Use #1B1024 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.