#1D1833
Closest named color: Rich Black (#0D1B2A). oklch(23% 0.051 290.3), rgb(29, 24, 51).
Aa
White text reads best on this color (17.06:1).
About this color
#1D1833 is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.051 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 17.06:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.051) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 17.06:1 |
Values
| HEX | #1D1833 |
| RGB | rgb(29, 24, 51) |
| HSL | hsl(251, 36%, 15%) |
| OKLCH | oklch(23% 0.051 290.3) |
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 #1D1833 | 17.06:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #1D1833 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #1D1833 text on white | 17.06:1 | AAA | Lc 103.9 | Preferred for body text |
| #1D1833 text on black | 1.23:1 | 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
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D8D6EE
oklch(88.5% 0.033 289.5)
-
Step 300
300
#C0BBE6
oklch(81% 0.06 290.3)
-
Step 400
400
#A096D9
oklch(70.7% 0.097 290.5)
-
Step 500
500
#897BCF
oklch(63.1% 0.124 290)
-
Step 600
600
#7463BC
oklch(55.7% 0.135 290.1)
-
Step 700
700
#6151A2
oklch(49% 0.126 290)
-
Step 800
800
#4F4383
oklch(42.7% 0.103 289.9)
-
Step 900
900
#423969
oklch(37.7% 0.081 290.6)
-
Step 950
950 (this color)
#1D1833
oklch(23% 0.051 290.3)
#1D1833 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) | #0F1C34 | 0.025 |
| Deuteranopia (no green cones) | #0F1B32 | 0.025 |
| Tritanopia (no blue cones) | #171D23 | 0.041 |
| Achromatopsia (no color) | #1C1C1C | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D1833
#1D1833
oklch(23% 0.051 290.3)
- #1E1F00
#1E1F00
oklch(23% 0.051 111.5)
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 #1D1833, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Dark #1B2431 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.046
- Jet #212529 ΔE 0.055
- Midnight Purple #280137 ΔE 0.061
- Very Dark Purple #2A0134 ΔE 0.062
- Navy Blue #001146 ΔE 0.065
- Eggplant #380835 ΔE 0.067
Use #1D1833 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.