#1B0529
Closest named color: Midnight Purple (#280137). oklch(18% 0.072 309.3), rgb(27, 5, 41).
Aa
White text reads best on this color (19.08:1).
About this color
#1B0529 is a very dark, moderately saturated purple. In OKLCH its lightness is 18%, its chroma 0.072 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Midnight Purple (#280137), ΔE 0.041 away. White text reads best on it, at 19.08:1.
| Hue family | Purples |
| Lightness | very dark (18%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Midnight Purple (#280137) |
| Black text | 1.10:1 |
| White text | 19.08:1 |
Values
| HEX | #1B0529 |
| RGB | rgb(27, 5, 41) |
| HSL | hsl(277, 78%, 9%) |
| OKLCH | oklch(18% 0.072 309.3) |
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 #1B0529 | 19.08:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #1B0529 | 1.10:1 | Fails | Lc 0.0 | Not readable |
| #1B0529 text on white | 19.08:1 | AAA | Lc 105.2 | Preferred for body text |
| #1B0529 text on black | 1.10:1 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F7
oklch(93.7% 0.025 309.4)
-
Step 200
200
#E2D1F2
oklch(88.5% 0.048 308.5)
-
Step 300
300
#D1B2EB
oklch(80.9% 0.085 309.2)
-
Step 400
400
#BA87E1
oklch(70.7% 0.138 309.3)
-
Step 500
500
#A966D8
oklch(63.2% 0.175 309.4)
-
Step 600
600
#9449C5
oklch(55.5% 0.191 309.4)
-
Step 700
700
#7E39AB
oklch(49% 0.178 309.1)
-
Step 800
800
#67318A
oklch(42.8% 0.146 309.5)
-
Step 900
900
#532C6E
oklch(37.6% 0.114 309.2)
-
Step 950
950 (this color)
#1B0529
oklch(18% 0.072 309.3)
#1B0529 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) | #000F2A | 0.060 |
| Deuteranopia (no green cones) | #011028 | 0.060 |
| Tritanopia (no blue cones) | #190C16 | 0.048 |
| Achromatopsia (no color) | #101010 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B0529
#1B0529
oklch(18% 0.072 309.3)
- #0B1500
#0B1500
oklch(17.9% 0.047 128.4)
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 #1B0529, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Purple #280137 ΔE 0.041
- Very Dark Purple #2A0134 ΔE 0.042
- Midnight #03012D ΔE 0.067
- Dark Navy #000435 ΔE 0.071
- Rich Black #0D1B2A ΔE 0.072
- Dark Navy Blue #00022E ΔE 0.074
- Dark Purple #35063E ΔE 0.074
- Eggplant #380835 ΔE 0.076
Use #1B0529 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.