#172544
Closest named color: Oxford Blue (#1B263B). oklch(27% 0.061 264.4), rgb(23, 37, 68).
Aa
White text reads best on this color (15.16:1).
About this color
#172544 is a dark, muted blue. In OKLCH its lightness is 27%, its chroma 0.061 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.019 away. White text reads best on it, at 15.16:1.
| Hue family | Blues |
| Lightness | dark (27%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.38:1 |
| White text | 15.16:1 |
Values
| HEX | #172544 |
| RGB | rgb(23, 37, 68) |
| HSL | hsl(221, 49%, 18%) |
| OKLCH | oklch(27% 0.061 264.4) |
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 #172544 | 15.16:1 | AAA | Lc -104.7 | Preferred for body text |
| Black text on #172544 | 1.38:1 | Fails | Lc 0.0 | Not readable |
| #172544 text on white | 15.16:1 | AAA | Lc 102.0 | Preferred for body text |
| #172544 text on black | 1.38:1 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCD9F5
oklch(88.4% 0.041 265.7)
-
Step 300
300
#A9C1F0
oklch(80.9% 0.072 263.7)
-
Step 400
400
#7C9FE9
oklch(70.7% 0.116 264.3)
-
Step 500
500
#5B85E2
oklch(63% 0.148 264.3)
-
Step 600
600
#426DD0
oklch(55.6% 0.16 264.2)
-
Step 700
700
#345AB4
oklch(49% 0.149 264.4)
-
Step 800
800
#2C4A92
oklch(42.7% 0.124 264.7)
-
Step 900
900
#273F74
oklch(37.7% 0.096 264)
-
Step 950
950 (this color)
#172544
oklch(27% 0.061 264.4)
#172544 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) | #182845 | 0.010 |
| Deuteranopia (no green cones) | #122443 | 0.008 |
| Tritanopia (no blue cones) | #002C31 | 0.053 |
| Achromatopsia (no color) | #262626 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172544
#172544
oklch(27% 0.061 264.4)
- #332400
#332400
oklch(27.1% 0.056 85)
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 #172544, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.019
- Dark #1B2431 ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.044
- Jet #212529 ΔE 0.053
- Marine #042E60 ΔE 0.055
- Gunmetal #293241 ΔE 0.055
- Rich Black #0D1B2A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.059
Use #172544 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.