#172E3E
Closest named color: Oxford Blue (#1B263B). oklch(29% 0.041 240.6), rgb(23, 46, 62).
Aa
White text reads best on this color (14.03:1).
About this color
#172E3E is a dark, muted blue. In OKLCH its lightness is 29%, its chroma 0.041 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.027 away. White text reads best on it, at 14.03:1.
| Hue family | Blues |
| Lightness | dark (29%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.49:1 |
| White text | 14.03:1 |
Values
| HEX | #172E3E |
| RGB | rgb(23, 46, 62) |
| HSL | hsl(205, 46%, 17%) |
| OKLCH | oklch(29% 0.041 240.6) |
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 #172E3E | 14.03:1 | AAA | Lc -103.6 | Preferred for body text |
| Black text on #172E3E | 1.49:1 | Fails | Lc 0.0 | Not readable |
| #172E3E text on white | 14.03:1 | AAA | Lc 100.6 | Preferred for body text |
| #172E3E text on black | 1.49:1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CADCEA
oklch(88.5% 0.027 241.2)
-
Step 300
300
#A5C5DE
oklch(80.8% 0.049 241.8)
-
Step 400
400
#73A7CD
oklch(70.6% 0.078 241)
-
Step 500
500
#4B91C0
oklch(63.1% 0.1 240.3)
-
Step 600
600
#2A7AAC
oklch(55.5% 0.109 240.6)
-
Step 700
700
#1C6794
oklch(49.1% 0.101 240.5)
-
Step 800
800
#1A5478
oklch(42.7% 0.084 240.5)
-
Step 900
900
#1D4661
oklch(37.8% 0.065 240.4)
-
Step 950
950 (this color)
#172E3E
oklch(29% 0.041 240.6)
#172E3E 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) | #272E3F | 0.023 |
| Deuteranopia (no green cones) | #222A3E | 0.019 |
| Tritanopia (no blue cones) | #003233 | 0.034 |
| Achromatopsia (no color) | #2C2C2C | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172E3E
#172E3E
oklch(29% 0.041 240.6)
- #3A2615
#3A2615
oklch(28.9% 0.041 60.5)
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 #172E3E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.027
- Gunmetal #293241 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.030
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.043
- Midnight Green #073B4C ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
Use #172E3E 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.