#1C1533
Closest named color: Rich Black (#0D1B2A). oklch(22.2% 0.057 291.8), rgb(28, 21, 51).
Aa
White text reads best on this color (17.43:1).
About this color
#1C1533 is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.057 and its hue 292°. 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 17.43:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.057) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.43:1 |
Values
| HEX | #1C1533 |
| RGB | rgb(28, 21, 51) |
| HSL | hsl(254, 42%, 14%) |
| OKLCH | oklch(22.2% 0.057 291.8) |
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 #1C1533 | 17.43:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #1C1533 | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1C1533 text on white | 17.43:1 | AAA | Lc 104.2 | Preferred for body text |
| #1C1533 text on black | 1.20:1 | 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
#D9D5F1
oklch(88.5% 0.038 292.2)
-
Step 300
300
#C1B9E9
oklch(80.8% 0.068 292.5)
-
Step 400
400
#A294DE
oklch(70.7% 0.107 292.1)
-
Step 500
500
#8C78D5
oklch(63.1% 0.137 291.9)
-
Step 600
600
#775FC2
oklch(55.6% 0.149 292)
-
Step 700
700
#644EA8
oklch(49.2% 0.139 291.7)
-
Step 800
800
#514088
oklch(42.6% 0.116 291.6)
-
Step 900
900
#43376D
oklch(37.7% 0.09 291.7)
-
Step 950
950 (this color)
#1C1533
oklch(22.2% 0.057 291.8)
#1C1533 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) | #091A34 | 0.032 |
| Deuteranopia (no green cones) | #0A1932 | 0.031 |
| Tritanopia (no blue cones) | #161B21 | 0.047 |
| Achromatopsia (no color) | #1A1A1A | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C1533
#1C1533
oklch(22.2% 0.057 291.8)
- #1C1D00
#1C1D00
oklch(22.2% 0.049 111.6)
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 #1C1533, 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 0.052
- Midnight Purple #280137 ΔE 0.054
- Oxford Blue #1B263B ΔE 0.055
- Very Dark Purple #2A0134 ΔE 0.056
- Navy Blue #001146 ΔE 0.061
- Jet #212529 ΔE 0.064
- Dark Purple #35063E ΔE 0.065
Use #1C1533 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.