#174973
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.088 247.9), rgb(23, 73, 115).
Aa
White text reads best on this color (9.38:1).
About this color
#174973 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.088 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.026 away. White text reads best on it, at 9.38:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.23:1 |
| White text | 9.38:1 |
Values
| HEX | #174973 |
| RGB | rgb(23, 73, 115) |
| HSL | hsl(207, 67%, 27%) |
| OKLCH | oklch(39.5% 0.088 247.9) |
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 #174973 | 9.38:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #174973 | 2.23:1 | Fails | Lc 12.6 | Not readable |
| #174973 text on white | 9.38:1 | AAA | Lc 91.4 | Preferred for body text |
| #174973 text on black | 2.23:1 | Fails | Lc -11.0 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF6
oklch(93.5% 0.019 248)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300
#9FC5EA
oklch(80.9% 0.066 248)
-
Step 400
400
#68A6E0
oklch(70.7% 0.107 248)
-
Step 500
500
#3A8FD7
oklch(63.2% 0.136 247.6)
-
Step 600
600
#0677C4
oklch(55.5% 0.147 247.9)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#025289
oklch(42.7% 0.113 247.6)
-
Step 900
900 (this color)
#174973
oklch(39.5% 0.088 247.9)
-
Step 950
950
#0C2840
oklch(26.9% 0.056 247.6)
#174973 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) | #364B75 | 0.033 |
| Deuteranopia (no green cones) | #284372 | 0.021 |
| Tritanopia (no blue cones) | #005358 | 0.065 |
| Achromatopsia (no color) | #464646 | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174973
#174973
oklch(39.5% 0.088 247.9)
- #643C00
#643C00
oklch(39.5% 0.086 68.4)
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 #174973, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.026
- Light Navy #155084 ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.041
- Cobalt #1E488F ΔE 0.049
- Dusk Blue #26538D ΔE 0.052
- Charcoal #264653 ΔE 0.054
- Marine Blue #01386A ΔE 0.057
Use #174973 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.