#171F32
Closest named color: Dark (#1B2431). oklch(24.2% 0.038 266.2), rgb(23, 31, 50).
Aa
White text reads best on this color (16.42:1).
About this color
#171F32 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.038 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.020 away. White text reads best on it, at 16.42:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.038) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.27:1 |
| White text | 16.42:1 |
Values
| HEX | #171F32 |
| RGB | rgb(23, 31, 50) |
| HSL | hsl(222, 37%, 14%) |
| OKLCH | oklch(24.2% 0.038 266.2) |
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 #171F32 | 16.42:1 | AAA | Lc -105.8 | Preferred for body text |
| Black text on #171F32 | 1.27:1 | Fails | Lc 0.0 | Not readable |
| #171F32 text on white | 16.42:1 | AAA | Lc 103.3 | Preferred for body text |
| #171F32 text on black | 1.27:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D1D9EA
oklch(88.4% 0.025 265.6)
-
Step 300
300
#B3C1DF
oklch(81% 0.045 265.5)
-
Step 400
400
#8BA0CF
oklch(70.7% 0.073 265.9)
-
Step 500
500
#6F88C2
oklch(63.1% 0.093 266)
-
Step 600
600
#5771AF
oklch(55.6% 0.102 265.9)
-
Step 700
700
#485E96
oklch(49% 0.094 266.7)
-
Step 800
800
#3B4D7A
oklch(42.7% 0.078 266.6)
-
Step 900
900
#324162
oklch(37.8% 0.06 265)
-
Step 950
950 (this color)
#171F32
oklch(24.2% 0.038 266.2)
#171F32 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) | #182133 | 0.007 |
| Deuteranopia (no green cones) | #151E32 | 0.005 |
| Tritanopia (no blue cones) | #0D2326 | 0.034 |
| Achromatopsia (no color) | #1F1F1F | 0.038 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #171F32
#171F32
oklch(24.2% 0.038 266.2)
- #281E08
#281E08
oklch(24.1% 0.038 84.7)
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 #171F32, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.020
- Rich Black #0D1B2A ΔE 0.026
- Oxford Blue #1B263B ΔE 0.028
- Jet #212529 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.064
- Navy Blue #001146 ΔE 0.071
- Gunmetal #293241 ΔE 0.074
- Rich Navy #001219 ΔE 0.077
Use #171F32 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.