#191939
Closest named color: Rich Black (#0D1B2A). oklch(23.3% 0.06 280.6), rgb(25, 25, 57).
Aa
White text reads best on this color (16.94:1).
About this color
#191939 is a very dark, muted purple. In OKLCH its lightness is 23%, its chroma 0.060 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.037 away. White text reads best on it, at 16.94:1.
| Hue family | Purples |
| Lightness | very dark (23%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.23:1 |
| White text | 16.94:1 |
Values
| HEX | #191939 |
| RGB | rgb(25, 25, 57) |
| HSL | hsl(240, 39%, 16%) |
| OKLCH | oklch(23.3% 0.06 280.6) |
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 #191939 | 16.94:1 | AAA | Lc -106.2 | Preferred for body text |
| Black text on #191939 | 1.23:1 | Fails | Lc 0.0 | Not readable |
| #191939 text on white | 16.94:1 | AAA | Lc 103.8 | Preferred for body text |
| #191939 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
#F4F5FC
oklch(97.1% 0.009 279.7)
-
Step 100
100
#E7E9F8
oklch(93.7% 0.02 279.9)
-
Step 200
200
#D4D7F4
oklch(88.6% 0.04 280.9)
-
Step 300
300
#B7BCEF
oklch(80.9% 0.072 280.3)
-
Step 400
400
#9498E6
oklch(70.7% 0.113 280.8)
-
Step 500
500
#7B7CDF
oklch(63.1% 0.146 280.9)
-
Step 600
600
#6563CD
oklch(55.6% 0.16 280.7)
-
Step 700
700
#5452B1
oklch(49.2% 0.147 280.5)
-
Step 800
800
#45438F
oklch(42.6% 0.122 281.1)
-
Step 900
900
#393A72
oklch(37.7% 0.094 280.1)
-
Step 950
950 (this color)
#191939
oklch(23.3% 0.06 280.6)
#191939 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) | #0B1E3A | 0.024 |
| Deuteranopia (no green cones) | #091B38 | 0.023 |
| Tritanopia (no blue cones) | #0D2026 | 0.052 |
| Achromatopsia (no color) | #1D1D1D | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191939
#191939
oklch(23.3% 0.06 280.6)
- #231E00
#231E00
oklch(23.4% 0.049 100.5)
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 #191939, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.037
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.044
- Navy Blue #001146 ΔE 0.054
- Jet #212529 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.062
- Midnight Purple #280137 ΔE 0.065
- Very Dark Purple #2A0134 ΔE 0.067
Use #191939 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.