#1D1633
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.055 292.5), rgb(29, 22, 51).
Aa
White text reads best on this color (17.28:1).
About this color
#1D1633 is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.055 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.038 away. White text reads best on it, at 17.28:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.055) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.28:1 |
Values
| HEX | #1D1633 |
| RGB | rgb(29, 22, 51) |
| HSL | hsl(254, 40%, 14%) |
| OKLCH | oklch(22.5% 0.055 292.5) |
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 #1D1633 | 17.28:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #1D1633 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1D1633 text on white | 17.28:1 | AAA | Lc 104.1 | Preferred for body text |
| #1D1633 text on black | 1.21:1 | 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
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#D9D5F0
oklch(88.4% 0.037 292.4)
-
Step 300
300
#C1B9E8
oklch(80.8% 0.066 292.7)
-
Step 400
400
#A294DC
oklch(70.6% 0.104 292.4)
-
Step 500
500
#8D78D2
oklch(63.1% 0.133 292.9)
-
Step 600
600
#775FC0
oklch(55.5% 0.146 292.4)
-
Step 700
700
#654EA5
oklch(49.1% 0.135 292.9)
-
Step 800
800
#524186
oklch(42.8% 0.111 292.4)
-
Step 900
900
#44376B
oklch(37.7% 0.087 293.3)
-
Step 950
950 (this color)
#1D1633
oklch(22.5% 0.055 292.5)
#1D1633 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) | #0C1B34 | 0.030 |
| Deuteranopia (no green cones) | #0D1A32 | 0.029 |
| Tritanopia (no blue cones) | #181C22 | 0.045 |
| Achromatopsia (no color) | #1B1B1B | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D1633
#1D1633
oklch(22.5% 0.055 292.5)
- #1C1E00
#1C1E00
oklch(22.5% 0.05 113.3)
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 #1D1633, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.038
- Dark #1B2431 ΔE 0.048
- Oxford Blue #1B263B ΔE 0.052
- Midnight Purple #280137 ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.057
- Jet #212529 ΔE 0.061
- Navy Blue #001146 ΔE 0.063
- Dark Purple #35063E ΔE 0.065
Use #1D1633 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.