#174582
Closest named color: Twilight Blue (#0A437A). oklch(39.5% 0.114 256.9), rgb(23, 69, 130).
Aa
White text reads best on this color (9.50:1).
About this color
#174582 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.114 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.017 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.21:1 |
| White text | 9.50:1 |
Values
| HEX | #174582 |
| RGB | rgb(23, 69, 130) |
| HSL | hsl(214, 70%, 30%) |
| OKLCH | oklch(39.5% 0.114 256.9) |
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 #174582 | 9.50:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #174582 | 2.21:1 | Fails | Lc 12.4 | Not readable |
| #174582 text on white | 9.50:1 | AAA | Lc 91.6 | Preferred for body text |
| #174582 text on black | 2.21:1 | Fails | Lc -10.8 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFB
oklch(93.7% 0.025 257.6)
-
Step 200
200
#C6DBF9
oklch(88.5% 0.047 257.3)
-
Step 300
300
#9DC3F8
oklch(80.9% 0.086 256.8)
-
Step 400
400
#66A2F5
oklch(70.7% 0.137 256.8)
-
Step 500
500
#3A88F1
oklch(63.2% 0.175 257)
-
Step 600
600
#0D6FDF
oklch(55.7% 0.19 256.8)
-
Step 700
700
#005CC0
oklch(49.1% 0.174 256.9)
-
Step 800
800
#064B9D
oklch(42.6% 0.147 257.2)
-
Step 900
900 (this color)
#174582
oklch(39.5% 0.114 256.9)
-
Step 950
950
#0C2649
oklch(27% 0.072 256.9)
#174582 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) | #254B84 | 0.023 |
| Deuteranopia (no green cones) | #0B4181 | 0.015 |
| Tritanopia (no blue cones) | #00545D | 0.088 |
| Achromatopsia (no color) | #464646 | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #174582
#174582
oklch(39.5% 0.114 256.9)
- #5F3F00
#5F3F00
oklch(39.4% 0.083 76.4)
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 #174582, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.017
- Cobalt #1E488F ΔE 0.024
- Light Navy #155084 ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.044
- Dusk Blue #26538D ΔE 0.047
- Marine Blue #01386A ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.064
- Blueberry #464196 ΔE 0.066
Use #174582 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.