#18192F
Closest named color: Rich Black (#0D1B2A). oklch(22.5% 0.043 280.4), rgb(24, 25, 47).
Aa
White text reads best on this color (17.22:1).
About this color
#18192F is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.043 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.022 away. White text reads best on it, at 17.22:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.22:1 |
Values
| HEX | #18192F |
| RGB | rgb(24, 25, 47) |
| HSL | hsl(237, 32%, 14%) |
| OKLCH | oklch(22.5% 0.043 280.4) |
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 #18192F | 17.22:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #18192F | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #18192F text on white | 17.22:1 | AAA | Lc 104.1 | Preferred for body text |
| #18192F 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F4
oklch(93.6% 0.015 281.9)
-
Step 200
200
#D5D7EC
oklch(88.4% 0.029 281.5)
-
Step 300
300
#BABEE1
oklch(81% 0.049 280.1)
-
Step 400
400
#979BD2
oklch(70.7% 0.08 280.9)
-
Step 500
500
#7E82C7
oklch(63.2% 0.103 280.5)
-
Step 600
600
#686AB3
oklch(55.5% 0.112 280.9)
-
Step 700
700
#56589A
oklch(49% 0.104 280.5)
-
Step 800
800
#46497D
oklch(42.8% 0.086 279.6)
-
Step 900
900
#3B3D64
oklch(37.7% 0.066 280.5)
-
Step 950
950 (this color)
#18192F
oklch(22.5% 0.043 280.4)
#18192F 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) | #111C30 | 0.014 |
| Deuteranopia (no green cones) | #101A2E | 0.014 |
| Tritanopia (no blue cones) | #111D21 | 0.037 |
| Achromatopsia (no color) | #1B1B1B | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18192F
#18192F
oklch(22.5% 0.043 280.4)
- #201C02
#201C02
oklch(22.4% 0.043 101.2)
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 #18192F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.022
- Dark #1B2431 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.046
- Jet #212529 ΔE 0.051
- Navy Blue #001146 ΔE 0.065
- Rich Navy #001219 ΔE 0.067
- Midnight Purple #280137 ΔE 0.071
- Very Dark Purple #2A0134 ΔE 0.072
Use #18192F 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.