#191840
Closest named color: Navy Blue (#001146). oklch(23.7% 0.074 280.2), rgb(25, 24, 64).
Aa
White text reads best on this color (16.85:1).
About this color
#191840 is a very dark, moderately saturated purple. In OKLCH its lightness is 24%, its chroma 0.074 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.047 away. White text reads best on it, at 16.85:1.
| Hue family | Purples |
| Lightness | very dark (24%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.24:1 |
| White text | 16.85:1 |
Values
| HEX | #191840 |
| RGB | rgb(25, 24, 64) |
| HSL | hsl(242, 45%, 17%) |
| OKLCH | oklch(23.7% 0.074 280.2) |
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 #191840 | 16.85:1 | AAA | Lc -106.0 | Preferred for body text |
| Black text on #191840 | 1.24:1 | Fails | Lc 0.0 | Not readable |
| #191840 text on white | 16.85:1 | AAA | Lc 103.6 | Preferred for body text |
| #191840 text on black | 1.24:1 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E8FB
oklch(93.5% 0.026 281.1)
-
Step 200
200
#D2D6FA
oklch(88.4% 0.05 280.3)
-
Step 300
300
#B5BBF9
oklch(80.9% 0.088 279.9)
-
Step 400
400
#9195F6
oklch(70.8% 0.14 280.4)
-
Step 500
500
#7877F2
oklch(63.1% 0.18 280.3)
-
Step 600
600
#635CE0
oklch(55.5% 0.194 280.4)
-
Step 700
700
#524BC3
oklch(49.1% 0.181 280)
-
Step 800
800
#433E9E
oklch(42.7% 0.151 280.2)
-
Step 900
900
#38367D
oklch(37.6% 0.117 280.4)
-
Step 950
950 (this color)
#191840
oklch(23.7% 0.074 280.2)
#191840 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) | #021F41 | 0.033 |
| Deuteranopia (no green cones) | #001C3F | 0.033 |
| Tritanopia (no blue cones) | #082129 | 0.063 |
| Achromatopsia (no color) | #1D1D1D | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #191840
#191840
oklch(23.7% 0.074 280.2)
- #241F00
#241F00
oklch(23.8% 0.05 100.7)
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 #191840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.049
- Dark Indigo #1F0954 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.050
- Dark #1B2431 ΔE 0.054
- Midnight Purple #280137 ΔE 0.063
- Very Dark Purple #2A0134 ΔE 0.067
- Night Blue #040348 ΔE 0.068
Use #191840 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.