#172D2B
Closest named color: Jet (#212529). oklch(27.8% 0.028 188.2), rgb(23, 45, 43).
Aa
White text reads best on this color (14.51:1).
About this color
#172D2B is a dark close to neutral grey. In OKLCH its lightness is 28%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.030 away. White text reads best on it, at 14.51:1.
| Hue family | Neutrals |
| Lightness | dark (28%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.44:1 |
| White text | 14.51:1 |
Values
| HEX | #172D2B |
| RGB | rgb(23, 45, 43) |
| HSL | hsl(175, 32%, 13%) |
| OKLCH | oklch(27.8% 0.028 188.2) |
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 #172D2B | 14.51:1 | AAA | Lc -104.2 | Preferred for body text |
| Black text on #172D2B | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #172D2B text on white | 14.51:1 | AAA | Lc 101.2 | Preferred for body text |
| #172D2B text on black | 1.44:1 | 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
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDB
oklch(88.4% 0.018 188.3)
-
Step 300
300
#A9C8C5
oklch(80.9% 0.034 189.3)
-
Step 400
400
#7AACA7
oklch(70.8% 0.054 188.3)
-
Step 500
500
#559791
oklch(63.1% 0.068 188)
-
Step 600
600
#36817C
oklch(55.5% 0.074 189.3)
-
Step 700
700
#286D68
oklch(49% 0.069 188.5)
-
Step 800
800
#235955
oklch(42.7% 0.057 188.6)
-
Step 900
900
#224946
oklch(37.6% 0.045 188.9)
-
Step 950
950 (this color)
#172D2B
oklch(27.8% 0.028 188.2)
#172D2B 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) | #2B2B2B | 0.030 |
| Deuteranopia (no green cones) | #27282B | 0.028 |
| Tritanopia (no blue cones) | #0E2E2C | 0.009 |
| Achromatopsia (no color) | #292929 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172D2B
#172D2B
oklch(27.8% 0.028 188.2)
- #352326
#352326
oklch(27.9% 0.028 8)
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 #172D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.030
- Dark #1B2431 ΔE 0.038
- Oxford Blue #1B263B ΔE 0.045
- Gunmetal #293241 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.055
- Pakistan Green #283618 ΔE 0.056
- Midnight Green #073B4C ΔE 0.065
- Very Dark Green #062E03 ΔE 0.068
Use #172D2B 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.