#1D172E
Closest named color: Rich Black (#0D1B2A). oklch(22.4% 0.044 294.6), rgb(29, 23, 46).
Aa
White text reads best on this color (17.29:1).
About this color
#1D172E is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.044 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.031 away. White text reads best on it, at 17.29:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.21:1 |
| White text | 17.29:1 |
Values
| HEX | #1D172E |
| RGB | rgb(29, 23, 46) |
| HSL | hsl(256, 33%, 14%) |
| OKLCH | oklch(22.4% 0.044 294.6) |
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 #1D172E | 17.29:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #1D172E | 1.21:1 | Fails | Lc 0.0 | Not readable |
| #1D172E text on white | 17.29:1 | AAA | Lc 104.1 | Preferred for body text |
| #1D172E 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F3
oklch(93.6% 0.015 294.5)
-
Step 200
200
#DAD6EB
oklch(88.6% 0.029 294.5)
-
Step 300
300
#C2BBE0
oklch(81% 0.052 293.9)
-
Step 400
400
#A497D0
oklch(70.8% 0.083 294.6)
-
Step 500
500
#8E7CC4
oklch(63.2% 0.108 294.6)
-
Step 600
600
#7864B0
oklch(55.6% 0.116 294.4)
-
Step 700
700
#655397
oklch(49.1% 0.107 294.3)
-
Step 800
800
#53447B
oklch(42.8% 0.09 294.9)
-
Step 900
900
#443A63
oklch(37.8% 0.069 294)
-
Step 950
950 (this color)
#1D172E
oklch(22.4% 0.044 294.6)
#1D172E 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) | #101B2F | 0.025 |
| Deuteranopia (no green cones) | #111A2D | 0.023 |
| Tritanopia (no blue cones) | #191B20 | 0.035 |
| Achromatopsia (no color) | #1B1B1B | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1D172E
#1D172E
oklch(22.4% 0.044 294.6)
- #1B1E03
#1B1E03
oklch(22.5% 0.046 115.2)
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 #1D172E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.031
- Dark #1B2431 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.051
- Jet #212529 ΔE 0.054
- Very Dark Purple #2A0134 ΔE 0.063
- Midnight Purple #280137 ΔE 0.063
- Eggplant #380835 ΔE 0.068
- Navy Blue #001146 ΔE 0.070
Use #1D172E 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.