#1A172D
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.042 288.7), rgb(26, 23, 45).
Aa
White text reads best on this color (17.43:1).
About this color
#1A172D is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.042 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.026 away. White text reads best on it, at 17.43:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.43:1 |
Values
| HEX | #1A172D |
| RGB | rgb(26, 23, 45) |
| HSL | hsl(248, 32%, 13%) |
| OKLCH | oklch(22% 0.042 288.7) |
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 #1A172D | 17.43:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #1A172D | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1A172D text on white | 17.43:1 | AAA | Lc 104.2 | Preferred for body text |
| #1A172D text on black | 1.20:1 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E9E8F3
oklch(93.5% 0.015 290.3)
-
Step 200
200
#D8D7EB
oklch(88.6% 0.027 288.1)
-
Step 300
300
#BFBCE0
oklch(80.9% 0.05 289)
-
Step 400
400
#9E99D0
oklch(70.7% 0.08 288.3)
-
Step 500
500
#877FC4
oklch(63.1% 0.103 288.4)
-
Step 600
600
#7167B0
oklch(55.5% 0.111 288.5)
-
Step 700
700
#5F5598
oklch(49% 0.105 288.8)
-
Step 800
800
#4E467B
oklch(42.7% 0.086 289.1)
-
Step 900
900
#403B63
oklch(37.6% 0.068 288.4)
-
Step 950
950 (this color)
#1A172D
oklch(22% 0.042 288.7)
#1A172D 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) | #101A2E | 0.019 |
| Deuteranopia (no green cones) | #10192C | 0.018 |
| Tritanopia (no blue cones) | #151B1F | 0.036 |
| Achromatopsia (no color) | #1A1A1A | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A172D
#1A172D
oklch(22% 0.042 288.7)
- #1C1C03
#1C1C03
oklch(22% 0.042 109.4)
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 #1A172D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.026
- Dark #1B2431 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.053
- Jet #212529 ΔE 0.055
- Rich Navy #001219 ΔE 0.066
- Midnight Purple #280137 ΔE 0.066
- Very Dark Purple #2A0134 ΔE 0.066
- Navy Blue #001146 ΔE 0.068
Use #1A172D 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.