#172C29
Closest named color: Jet (#212529). oklch(27.4% 0.028 184.2), rgb(23, 44, 41).
Aa
White text reads best on this color (14.69:1).
About this color
#172C29 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.028 away. White text reads best on it, at 14.69:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.42:1 |
| White text | 14.69:1 |
Values
| HEX | #172C29 |
| RGB | rgb(23, 44, 41) |
| HSL | hsl(171, 31%, 13%) |
| OKLCH | oklch(27.4% 0.028 184.2) |
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 #172C29 | 14.69:1 | AAA | Lc -104.3 | Preferred for body text |
| Black text on #172C29 | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #172C29 text on white | 14.69:1 | AAA | Lc 101.5 | Preferred for body text |
| #172C29 text on black | 1.42:1 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#AAC8C3
oklch(80.9% 0.033 184.4)
-
Step 400
400
#7CACA4
oklch(70.8% 0.053 183.4)
-
Step 500
500
#58978E
oklch(63.1% 0.067 184.1)
-
Step 600
600
#3A8178
oklch(55.5% 0.073 184.3)
-
Step 700
700
#2C6D65
oklch(49% 0.067 184.3)
-
Step 800
800
#265952
oklch(42.7% 0.056 183.5)
-
Step 900
900
#244944
oklch(37.6% 0.044 184.3)
-
Step 950
950 (this color)
#172C29
oklch(27.4% 0.028 184.2)
#172C29 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) | #2A2A29 | 0.029 |
| Deuteranopia (no green cones) | #262729 | 0.027 |
| Tritanopia (no blue cones) | #0F2D2B | 0.009 |
| Achromatopsia (no color) | #282828 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172C29
#172C29
oklch(27.4% 0.028 184.2)
- #332226
#332226
oklch(27.4% 0.027 3.5)
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 #172C29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.028
- Dark #1B2431 ΔE 0.037
- Oxford Blue #1B263B ΔE 0.046
- Gunmetal #293241 ΔE 0.054
- Pakistan Green #283618 ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.058
- Very Dark Green #062E03 ΔE 0.066
- Dark Forest Green #002D04 ΔE 0.066
Use #172C29 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.