#191C28
Closest named color: Rich Black (#0D1B2A). oklch(22.9% 0.024 273.5), rgb(25, 28, 40).
Aa
White text reads best on this color (16.96:1).
About this color
#191C28 is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.020 away. White text reads best on it, at 16.96:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.96:1 |
Values
| HEX | #191C28 |
| RGB | rgb(25, 28, 40) |
| HSL | hsl(228, 23%, 13%) |
| OKLCH | oklch(22.9% 0.024 273.5) |
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 #191C28 | 16.96:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #191C28 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #191C28 text on white | 16.96:1 | AAA | Lc 103.9 | Preferred for body text |
| #191C28 text on black | 1.23:1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D5D9E4
oklch(88.5% 0.016 270)
-
Step 300
300
#BAC0D3
oklch(80.9% 0.028 271.8)
-
Step 400
400
#979FBD
oklch(70.6% 0.045 273.5)
-
Step 500
500
#7E87AD
oklch(63% 0.058 274.3)
-
Step 600
600
#677198
oklch(55.6% 0.062 273.1)
-
Step 700
700
#565F82
oklch(49.2% 0.057 273)
-
Step 800
800
#464D6A
oklch(42.6% 0.049 273.7)
-
Step 900
900
#3B4056
oklch(37.6% 0.038 274.5)
-
Step 950
950 (this color)
#191C28
oklch(22.9% 0.024 273.5)
#191C28 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) | #181D29 | 0.004 |
| Deuteranopia (no green cones) | #171C28 | 0.003 |
| Tritanopia (no blue cones) | #151E20 | 0.021 |
| Achromatopsia (no color) | #1C1C1C | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191C28
#191C28
oklch(22.9% 0.024 273.5)
- #201D10
#201D10
oklch(23% 0.024 96.7)
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 #191C28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.020
- Dark #1B2431 ΔE 0.030
- Jet #212529 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.045
- Rich Navy #001219 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.077
- Dark Brown #341C02 ΔE 0.080
- Almost Black #070D0D ΔE 0.080
Use #191C28 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.