#172A2F
Closest named color: Jet (#212529). oklch(27.1% 0.026 216.3), rgb(23, 42, 47).
Aa
White text reads best on this color (14.90:1).
About this color
#172A2F is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.021 away. White text reads best on it, at 14.90:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.40:1 |
| White text | 14.90:1 |
Values
| HEX | #172A2F |
| RGB | rgb(23, 42, 47) |
| HSL | hsl(193, 34%, 14%) |
| OKLCH | oklch(27.1% 0.026 216.3) |
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 #172A2F | 14.90:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #172A2F | 1.40:1 | Fails | Lc 0.0 | Not readable |
| #172A2F text on white | 14.90:1 | AAA | Lc 101.7 | Preferred for body text |
| #172A2F text on black | 1.40:1 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3EBEE
oklch(93.5% 0.009 222.1)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CE
oklch(80.9% 0.031 217.5)
-
Step 400
400
#7DA9B5
oklch(70.7% 0.05 216.4)
-
Step 500
500
#5A93A2
oklch(63% 0.064 216.4)
-
Step 600
600
#3E7E8E
oklch(55.7% 0.07 216.3)
-
Step 700
700
#2F6A78
oklch(49.1% 0.065 215.6)
-
Step 800
800
#285662
oklch(42.6% 0.054 217.1)
-
Step 900
900
#264750
oklch(37.7% 0.042 217.4)
-
Step 950
950 (this color)
#172A2F
oklch(27.1% 0.026 216.3)
#172A2F 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) | #27292F | 0.024 |
| Deuteranopia (no green cones) | #23262F | 0.022 |
| Tritanopia (no blue cones) | #0D2C2C | 0.015 |
| Achromatopsia (no color) | #272727 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172A2F
#172A2F
oklch(27.1% 0.026 216.3)
- #32221E
#32221E
oklch(27% 0.026 34.5)
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 #172A2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.021
- Dark #1B2431 ΔE 0.023
- Oxford Blue #1B263B ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.049
- Gunmetal #293241 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.057
- Midnight Green #073B4C ΔE 0.067
- Pakistan Green #283618 ΔE 0.071
Use #172A2F 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.