#174975
Closest named color: Twilight Blue (#0A437A). oklch(39.6% 0.091 249), rgb(23, 73, 117).
Aa
White text reads best on this color (9.34:1).
About this color
#174975 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.091 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.024 away. White text reads best on it, at 9.34:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #174975 |
| RGB | rgb(23, 73, 117) |
| HSL | hsl(208, 67%, 27%) |
| OKLCH | oklch(39.6% 0.091 249) |
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 #174975 | 9.34:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #174975 | 2.24:1 | Fails | Lc 12.7 | Not readable |
| #174975 text on white | 9.34:1 | AAA | Lc 91.3 | Preferred for body text |
| #174975 text on black | 2.24:1 | Fails | Lc -11.1 | 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
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF2
oklch(88.6% 0.038 249.5)
-
Step 300
300
#9FC5EC
oklch(80.9% 0.069 249.4)
-
Step 400
400
#68A6E2
oklch(70.8% 0.109 248.9)
-
Step 500
500
#3A8EDA
oklch(63.1% 0.14 249.2)
-
Step 600
600
#0476C7
oklch(55.5% 0.152 249.1)
-
Step 700
700
#0063A9
oklch(49% 0.136 249.1)
-
Step 800
800
#01518B
oklch(42.6% 0.117 248.9)
-
Step 900
900 (this color)
#174975
oklch(39.6% 0.091 249)
-
Step 950
950
#0C2841
oklch(27% 0.058 248.6)
#174975 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) | #354B77 | 0.032 |
| Deuteranopia (no green cones) | #274374 | 0.021 |
| Tritanopia (no blue cones) | #005459 | 0.068 |
| Achromatopsia (no color) | #474747 | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174975
#174975
oklch(39.6% 0.091 249)
- #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 #174975, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Light Navy #155084 ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.045
- Cobalt #1E488F ΔE 0.045
- Dusk Blue #26538D ΔE 0.050
- Charcoal #264653 ΔE 0.057
- Marine Blue #01386A ΔE 0.058
Use #174975 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.