#173448
Closest named color: Midnight Green (#073B4C). oklch(31.3% 0.05 241), rgb(23, 52, 72).
Aa
White text reads best on this color (12.95:1).
About this color
#173448 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.050 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.023 away. White text reads best on it, at 12.95:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.62:1 |
| White text | 12.95:1 |
Values
| HEX | #173448 |
| RGB | rgb(23, 52, 72) |
| HSL | hsl(204, 52%, 19%) |
| OKLCH | oklch(31.3% 0.05 241) |
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 #173448 | 12.95:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #173448 | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #173448 text on white | 12.95:1 | AAA | Lc 99.0 | Preferred for body text |
| #173448 text on black | 1.62:1 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C7DDED
oklch(88.6% 0.032 239.4)
-
Step 300
300
#9FC6E4
oklch(80.9% 0.06 241.6)
-
Step 400
400
#68A8D6
oklch(70.7% 0.094 241.1)
-
Step 500
500
#3792CC
oklch(63.2% 0.122 240.8)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#0F4667
oklch(37.7% 0.079 240.7)
-
Step 950
950 (this color)
#173448
oklch(31.3% 0.05 241)
#173448 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) | #2B3449 | 0.026 |
| Deuteranopia (no green cones) | #242F48 | 0.022 |
| Tritanopia (no blue cones) | #00393B | 0.037 |
| Achromatopsia (no color) | #313131 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #173448
#173448
oklch(31.3% 0.05 241)
- #432B15
#432B15
oklch(31.3% 0.05 61.9)
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 #173448, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.023
- Gunmetal #293241 ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.028
- Space Cadet #2B2D42 ΔE 0.032
- Oxford Blue #1B263B ΔE 0.047
- Onyx #343A40 ΔE 0.049
- Marine #042E60 ΔE 0.053
Use #173448 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.