#1C1634
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.057 290.3), rgb(28, 22, 52).
Aa
White text reads best on this color (17.30:1).
About this color
#1C1634 is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.057 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 0.037 away. White text reads best on it, at 17.30:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.30:1 |
Values
| HEX | #1C1634 |
| RGB | rgb(28, 22, 52) |
| HSL | hsl(252, 41%, 15%) |
| OKLCH | oklch(22.5% 0.057 290.3) |
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 #1C1634 | 17.30:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #1C1634 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1C1634 text on white | 17.30:1 | AAA | Lc 104.1 | Preferred for body text |
| #1C1634 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
#E9E8F6
oklch(93.6% 0.019 289.3)
-
Step 200
200
#D8D5F1
oklch(88.4% 0.038 290.5)
-
Step 300
300
#C0BAEA
oklch(81% 0.067 290.5)
-
Step 400
400
#A095DF
oklch(70.8% 0.107 290.2)
-
Step 500
500
#8A79D6
oklch(63.2% 0.137 290.3)
-
Step 600
600
#7460C3
oklch(55.6% 0.149 290)
-
Step 700
700
#624EA9
oklch(49% 0.14 290.4)
-
Step 800
800
#504188
oklch(42.7% 0.114 290.5)
-
Step 900
900
#42386D
oklch(37.8% 0.088 290.2)
-
Step 950
950 (this color)
#1C1634
oklch(22.5% 0.057 290.3)
#1C1634 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) | #0A1B35 | 0.031 |
| Deuteranopia (no green cones) | #0B1A33 | 0.029 |
| Tritanopia (no blue cones) | #161C22 | 0.047 |
| Achromatopsia (no color) | #1B1B1B | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C1634
#1C1634
oklch(22.5% 0.057 290.3)
- #1D1E00
#1D1E00
oklch(22.6% 0.05 111.5)
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 #1C1634, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.037
- Dark #1B2431 ΔE 0.049
- Oxford Blue #1B263B ΔE 0.052
- Midnight Purple #280137 ΔE 0.056
- Very Dark Purple #2A0134 ΔE 0.058
- Navy Blue #001146 ΔE 0.060
- Jet #212529 ΔE 0.062
- Dark Purple #35063E ΔE 0.066
Use #1C1634 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.