#191033
Closest named color: Rich Black (#0D1B2A). oklch(20.8% 0.066 291.4), rgb(25, 16, 51).
Aa
White text reads best on this color (18.05:1).
About this color
#191033 is a very dark, muted purple. In OKLCH its lightness is 21%, its chroma 0.066 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.046 away. White text reads best on it, at 18.05:1.
| Hue family | Purples |
| Lightness | very dark (21%) |
| Chroma | muted (0.066) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.16:1 |
| White text | 18.05:1 |
Values
| HEX | #191033 |
| RGB | rgb(25, 16, 51) |
| HSL | hsl(255, 52%, 13%) |
| OKLCH | oklch(20.8% 0.066 291.4) |
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 #191033 | 18.05:1 | AAA | Lc -106.8 | Preferred for body text |
| Black text on #191033 | 1.16:1 | Fails | Lc 0.0 | Not readable |
| #191033 text on white | 18.05:1 | AAA | Lc 104.6 | Preferred for body text |
| #191033 text on black | 1.16:1 | 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
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#EAE8F8
oklch(93.7% 0.022 291.7)
-
Step 200
200
#D9D5F4
oklch(88.6% 0.042 291.4)
-
Step 300
300
#C1B8F0
oklch(80.9% 0.079 291.9)
-
Step 400
400
#A291E8
oklch(70.6% 0.126 291.8)
-
Step 500
500
#8C74E1
oklch(63.1% 0.159 291.3)
-
Step 600
600
#775ACF
oklch(55.6% 0.173 291.1)
-
Step 700
700
#6549B3
oklch(49.2% 0.161 291.5)
-
Step 800
800
#523C91
oklch(42.6% 0.134 291.6)
-
Step 900
900
#433574
oklch(37.8% 0.104 290.8)
-
Step 950
950 (this color)
#191033
oklch(20.8% 0.066 291.4)
#191033 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) | #011734 | 0.041 |
| Deuteranopia (no green cones) | #021632 | 0.040 |
| Tritanopia (no blue cones) | #12181F | 0.054 |
| Achromatopsia (no color) | #161616 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191033
#191033
oklch(20.8% 0.066 291.4)
- #191900
#191900
oklch(20.7% 0.045 109.8)
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 #191033, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.046
- Midnight Purple #280137 ΔE 0.047
- Very Dark Purple #2A0134 ΔE 0.050
- Navy Blue #001146 ΔE 0.055
- Dark Indigo #1F0954 ΔE 0.064
- Night Blue #040348 ΔE 0.067
- Dark Navy #000435 ΔE 0.068
- Dark #1B2431 ΔE 0.068
Use #191033 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.