#172B28
Closest named color: Jet (#212529). oklch(27.1% 0.027 183.8), rgb(23, 43, 40).
Aa
White text reads best on this color (14.86:1).
About this color
#172B28 is a dark close to neutral grey. In OKLCH its lightness is 27%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.026 away. White text reads best on it, at 14.86:1.
| Hue family | Neutrals |
| Lightness | dark (27%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.41:1 |
| White text | 14.86:1 |
Values
| HEX | #172B28 |
| RGB | rgb(23, 43, 40) |
| HSL | hsl(171, 30%, 13%) |
| OKLCH | oklch(27.1% 0.027 183.8) |
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 #172B28 | 14.86:1 | AAA | Lc -104.5 | Preferred for body text |
| Black text on #172B28 | 1.41:1 | Fails | Lc 0.0 | Not readable |
| #172B28 text on white | 14.86:1 | AAA | Lc 101.7 | Preferred for body text |
| #172B28 text on black | 1.41:1 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#ABC8C3
oklch(81% 0.032 184)
-
Step 400
400
#7DABA4
oklch(70.6% 0.05 184.5)
-
Step 500
500
#5A978E
oklch(63.2% 0.065 183.8)
-
Step 600
600
#3E8178
oklch(55.7% 0.07 183.9)
-
Step 700
700
#2F6D65
oklch(49.2% 0.065 184.1)
-
Step 800
800
#285952
oklch(42.8% 0.055 183.2)
-
Step 900
900
#264944
oklch(37.7% 0.042 183.9)
-
Step 950
950 (this color)
#172B28
oklch(27.1% 0.027 183.8)
#172B28 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) | #292928 | 0.028 |
| Deuteranopia (no green cones) | #262628 | 0.028 |
| Tritanopia (no blue cones) | #102C2A | 0.008 |
| Achromatopsia (no color) | #272727 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172B28
#172B28
oklch(27.1% 0.027 183.8)
- #322125
#322125
oklch(27% 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 #172B28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.026
- Dark #1B2431 ΔE 0.035
- Oxford Blue #1B263B ΔE 0.046
- Gunmetal #293241 ΔE 0.057
- Space Cadet #2B2D42 ΔE 0.059
- Pakistan Green #283618 ΔE 0.059
- Rich Black #0D1B2A ΔE 0.064
- Very Dark Green #062E03 ΔE 0.065
Use #172B28 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.