#191B25
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.02 275.9), rgb(25, 27, 37).
Aa
White text reads best on this color (17.14:1).
About this color
#191B25 is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.021 away. White text reads best on it, at 17.14:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.14:1 |
Values
| HEX | #191B25 |
| RGB | rgb(25, 27, 37) |
| HSL | hsl(230, 19%, 12%) |
| OKLCH | oklch(22.5% 0.02 275.9) |
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 #191B25 | 17.14:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #191B25 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #191B25 text on white | 17.14:1 | AAA | Lc 104.0 | Preferred for body text |
| #191B25 text on black | 1.22:1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BCC0D0
oklch(81% 0.023 274.7)
-
Step 400
400
#9A9FB8
oklch(70.7% 0.037 276.5)
-
Step 500
500
#8188A7
oklch(63.2% 0.047 275)
-
Step 600
600
#6B7192
oklch(55.6% 0.052 276.6)
-
Step 700
700
#595F7C
oklch(49.2% 0.047 275.4)
-
Step 800
800
#494D65
oklch(42.6% 0.04 277.2)
-
Step 900
900
#3D4052
oklch(37.6% 0.031 277.4)
-
Step 950
950 (this color)
#191B25
oklch(22.5% 0.02 275.9)
#191B25 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) | #181C25 | 0.004 |
| Deuteranopia (no green cones) | #171B25 | 0.004 |
| Tritanopia (no blue cones) | #161D1E | 0.019 |
| Achromatopsia (no color) | #1B1B1B | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191B25
#191B25
oklch(22.5% 0.02 275.9)
- #1E1C11
#1E1C11
oklch(22.5% 0.02 99.1)
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 #191B25, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.021
- Dark #1B2431 ΔE 0.035
- Jet #212529 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.050
- Rich Navy #001219 ΔE 0.061
- Almost Black #070D0D ΔE 0.075
- Dark Brown #341C02 ΔE 0.077
- Space Cadet #2B2D42 ΔE 0.082
Use #191B25 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.