#172C36
Closest named color: Oxford Blue (#1B263B). oklch(28% 0.033 230.1), rgb(23, 44, 54).
Aa
White text reads best on this color (14.48:1).
About this color
#172C36 is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.033 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.026 away. White text reads best on it, at 14.48:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.44:1 |
| White text | 14.48:1 |
Values
| HEX | #172C36 |
| RGB | rgb(23, 44, 54) |
| HSL | hsl(199, 40%, 15%) |
| OKLCH | oklch(28% 0.033 230.1) |
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 #172C36 | 14.48:1 | AAA | Lc -104.1 | Preferred for body text |
| Black text on #172C36 | 1.44:1 | Fails | Lc 0.0 | Not readable |
| #172C36 text on white | 14.48:1 | AAA | Lc 101.2 | Preferred for body text |
| #172C36 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#A8C6D5
oklch(80.9% 0.039 229.5)
-
Step 400
400
#78A8C0
oklch(70.6% 0.062 230.4)
-
Step 500
500
#5393B0
oklch(63.2% 0.079 229.2)
-
Step 600
600
#357C9C
oklch(55.5% 0.086 230.6)
-
Step 700
700
#276985
oklch(49.2% 0.079 229.7)
-
Step 800
800
#22566C
oklch(42.8% 0.066 229)
-
Step 900
900
#214758
oklch(37.8% 0.052 229.5)
-
Step 950
950 (this color)
#172C36
oklch(28% 0.033 230.1)
#172C36 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) | #272B37 | 0.024 |
| Deuteranopia (no green cones) | #232836 | 0.021 |
| Tritanopia (no blue cones) | #072F2F | 0.025 |
| Achromatopsia (no color) | #292929 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172C36
#172C36
oklch(28% 0.033 230.1)
- #36241A
#36241A
oklch(27.9% 0.033 50)
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 #172C36, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.026
- Dark #1B2431 ΔE 0.027
- Jet #212529 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.039
- Gunmetal #293241 ΔE 0.039
- Midnight Green #073B4C ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.060
- Prussian Blue #1D3557 ΔE 0.063
Use #172C36 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.