#1A172E
Closest named color: Rich Black (#0D1B2A). oklch(22.1% 0.044 288.2), rgb(26, 23, 46).
Aa
White text reads best on this color (17.41:1).
About this color
#1A172E is a very dark, muted purple. In OKLCH its lightness is 22%, its chroma 0.044 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.027 away. White text reads best on it, at 17.41:1.
| Hue family | Purples |
| Lightness | very dark (22%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.41:1 |
Values
| HEX | #1A172E |
| RGB | rgb(26, 23, 46) |
| HSL | hsl(248, 33%, 14%) |
| OKLCH | oklch(22.1% 0.044 288.2) |
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 #1A172E | 17.41:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #1A172E | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #1A172E text on white | 17.41:1 | AAA | Lc 104.2 | Preferred for body text |
| #1A172E 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
#E9E8F4
oklch(93.5% 0.016 289.9)
-
Step 200
200
#D8D7EC
oklch(88.6% 0.029 288)
-
Step 300
300
#BEBCE1
oklch(80.9% 0.052 287.7)
-
Step 400
400
#9E99D2
oklch(70.8% 0.083 288.1)
-
Step 500
500
#877EC6
oklch(63% 0.107 288.7)
-
Step 600
600
#7167B3
oklch(55.7% 0.116 288.1)
-
Step 700
700
#5F559A
oklch(49.1% 0.108 288.4)
-
Step 800
800
#4D467D
oklch(42.7% 0.089 287.8)
-
Step 900
900
#403B64
oklch(37.7% 0.069 288.2)
-
Step 950
950 (this color)
#1A172E
oklch(22.1% 0.044 288.2)
#1A172E 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) | #101A2F | 0.019 |
| Deuteranopia (no green cones) | #0F192D | 0.020 |
| Tritanopia (no blue cones) | #151B20 | 0.036 |
| Achromatopsia (no color) | #1A1A1A | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1A172E
#1A172E
oklch(22.1% 0.044 288.2)
- #1D1C02
#1D1C02
oklch(22.1% 0.044 107.5)
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 #1A172E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.027
- Dark #1B2431 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.052
- Jet #212529 ΔE 0.056
- Midnight Purple #280137 ΔE 0.065
- Very Dark Purple #2A0134 ΔE 0.066
- Navy Blue #001146 ΔE 0.066
- Rich Navy #001219 ΔE 0.067
Use #1A172E 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.