#172E28
Closest named color: Jet (#212529). oklch(28% 0.031 175.3), rgb(23, 46, 40).
Aa
White text reads best on this color (14.40:1).
About this color
#172E28 is a dark, muted teal or cyan. In OKLCH its lightness is 28%, its chroma 0.031 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.035 away. White text reads best on it, at 14.40:1.
| Hue family | Teals and cyans |
| Lightness | dark (28%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.45:1 |
| White text | 14.40:1 |
Values
| HEX | #172E28 |
| RGB | rgb(23, 46, 40) |
| HSL | hsl(164, 33%, 14%) |
| OKLCH | oklch(28% 0.031 175.3) |
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 #172E28 | 14.40:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #172E28 | 1.45:1 | Fails | Lc 0.0 | Not readable |
| #172E28 text on white | 14.40:1 | AAA | Lc 101.1 | Preferred for body text |
| #172E28 text on black | 1.45:1 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A9C9BF
oklch(80.9% 0.037 174.5)
-
Step 400
400
#79AD9F
oklch(70.7% 0.059 175.9)
-
Step 500
500
#539987
oklch(63.2% 0.077 175.1)
-
Step 600
600
#348371
oklch(55.6% 0.082 175.6)
-
Step 700
700
#266F5E
oklch(49.1% 0.077 174.7)
-
Step 800
800
#215A4D
oklch(42.6% 0.063 175.6)
-
Step 900
900
#214A40
oklch(37.6% 0.05 175.5)
-
Step 950
950 (this color)
#172E28
oklch(28% 0.031 175.3)
#172E28 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) | #2D2B28 | 0.034 |
| Deuteranopia (no green cones) | #292928 | 0.031 |
| Tritanopia (no blue cones) | #0F2F2C | 0.010 |
| Achromatopsia (no color) | #2A2A2A | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172E28
#172E28
oklch(28% 0.031 175.3)
- #352229
#352229
oklch(27.8% 0.031 355.5)
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 #172E28, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.035
- Dark #1B2431 ΔE 0.045
- Pakistan Green #283618 ΔE 0.050
- Oxford Blue #1B263B ΔE 0.053
- Gunmetal #293241 ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.060
- Very Dark Green #062E03 ΔE 0.061
- Dark Forest Green #002D04 ΔE 0.062
Use #172E28 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.