#172C3D
Closest named color: Oxford Blue (#1B263B). oklch(28.4% 0.041 244.4), rgb(23, 44, 61).
Aa
White text reads best on this color (14.34:1).
About this color
#172C3D is a dark, muted blue. In OKLCH its lightness is 28%, its chroma 0.041 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.020 away. White text reads best on it, at 14.34:1.
| Hue family | Blues |
| Lightness | dark (28%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.46:1 |
| White text | 14.34:1 |
Values
| HEX | #172C3D |
| RGB | rgb(23, 44, 61) |
| HSL | hsl(207, 45%, 16%) |
| OKLCH | oklch(28.4% 0.041 244.4) |
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 #172C3D | 14.34:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #172C3D | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #172C3D text on white | 14.34:1 | AAA | Lc 101.0 | Preferred for body text |
| #172C3D text on black | 1.46:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEA
oklch(88.6% 0.027 242.8)
-
Step 300
300
#A7C5DF
oklch(81% 0.049 244.6)
-
Step 400
400
#76A6CF
oklch(70.7% 0.079 245)
-
Step 500
500
#5090C2
oklch(63.2% 0.1 243.9)
-
Step 600
600
#3279AE
oklch(55.6% 0.109 244.3)
-
Step 700
700
#246696
oklch(49.2% 0.101 244.3)
-
Step 800
800
#20537A
oklch(42.7% 0.084 244.9)
-
Step 900
900
#204562
oklch(37.7% 0.066 244.5)
-
Step 950
950 (this color)
#172C3D
oklch(28.4% 0.041 244.4)
#172C3D 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) | #252C3E | 0.020 |
| Deuteranopia (no green cones) | #20283D | 0.017 |
| Tritanopia (no blue cones) | #023032 | 0.034 |
| Achromatopsia (no color) | #2A2A2A | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172C3D
#172C3D
oklch(28.4% 0.041 244.4)
- #382513
#382513
oklch(28.3% 0.041 63.3)
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 #172C3D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.020
- Dark #1B2431 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.032
- Gunmetal #293241 ΔE 0.035
- Jet #212529 ΔE 0.039
- Midnight Green #073B4C ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.055
Use #172C3D 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.