#191833
Closest named color: Rich Black (#0D1B2A). oklch(22.6% 0.051 283.1), rgb(25, 24, 51).
Aa
White text reads best on this color (17.21:1).
About this color
#191833 is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.051 and its hue 283°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.030 away. White text reads best on it, at 17.21:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.21:1 |
Values
| HEX | #191833 |
| RGB | rgb(25, 24, 51) |
| HSL | hsl(242, 36%, 15%) |
| OKLCH | oklch(22.6% 0.051 283.1) |
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 #191833 | 17.21:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #191833 | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #191833 text on white | 17.21:1 | AAA | Lc 104.0 | Preferred for body text |
| #191833 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E8E9F6
oklch(93.7% 0.018 282.5)
-
Step 200
200
#D5D7EF
oklch(88.5% 0.033 281.9)
-
Step 300
300
#BABCE8
oklch(80.8% 0.062 282.9)
-
Step 400
400
#9899DC
oklch(70.8% 0.097 283)
-
Step 500
500
#807ED2
oklch(63.1% 0.125 283.3)
-
Step 600
600
#6A66BF
oklch(55.6% 0.135 283.1)
-
Step 700
700
#5854A5
oklch(49% 0.126 282.9)
-
Step 800
800
#484586
oklch(42.7% 0.105 283.1)
-
Step 900
900
#3C3B6B
oklch(37.7% 0.081 282.8)
-
Step 950
950 (this color)
#191833
oklch(22.6% 0.051 283.1)
#191833 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) | #0E1C34 | 0.020 |
| Deuteranopia (no green cones) | #0D1A32 | 0.020 |
| Tritanopia (no blue cones) | #111D23 | 0.042 |
| Achromatopsia (no color) | #1B1B1B | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191833
#191833
oklch(22.6% 0.051 283.1)
- #201D00
#201D00
oklch(22.7% 0.048 104.1)
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 #191833, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.030
- Dark #1B2431 ΔE 0.043
- Oxford Blue #1B263B ΔE 0.047
- Jet #212529 ΔE 0.057
- Navy Blue #001146 ΔE 0.059
- Midnight Purple #280137 ΔE 0.065
- Very Dark Purple #2A0134 ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.071
Use #191833 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.