#17456F
Closest named color: Twilight Blue (#0A437A). oklch(38.2% 0.087 249.6), rgb(23, 69, 111).
Aa
White text reads best on this color (9.91:1).
About this color
#17456F is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.087 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.022 away. White text reads best on it, at 9.91:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.11:1 |
| White text | 9.91:1 |
Values
| HEX | #17456F |
| RGB | rgb(23, 69, 111) |
| HSL | hsl(209, 66%, 26%) |
| OKLCH | oklch(38.2% 0.087 249.6) |
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 #17456F | 9.91:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #17456F | 2.11:1 | Fails | Lc 11.2 | Not readable |
| #17456F text on white | 9.91:1 | AAA | Lc 92.7 | Preferred for body text |
| #17456F text on black | 2.11:1 | Fails | Lc -9.7 | 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
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCF1
oklch(88.6% 0.036 249.5)
-
Step 300
300
#A1C5EA
oklch(81% 0.065 249.3)
-
Step 400
400
#6CA5DF
oklch(70.6% 0.104 249.9)
-
Step 500
500
#408ED6
oklch(63.1% 0.133 249.2)
-
Step 600
600
#1876C4
oklch(55.5% 0.146 249.8)
-
Step 700
700
#0563A9
oklch(49.1% 0.135 249.5)
-
Step 800
800
#0D5189
oklch(42.7% 0.112 249.6)
-
Step 900
900 (this color)
#17456F
oklch(38.2% 0.087 249.6)
-
Step 950
950
#0E2840
oklch(27% 0.055 249)
#17456F 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) | #324771 | 0.030 |
| Deuteranopia (no green cones) | #253F6E | 0.020 |
| Tritanopia (no blue cones) | #004F54 | 0.065 |
| Achromatopsia (no color) | #434343 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17456F
#17456F
oklch(38.2% 0.087 249.6)
- #5F3900
#5F3900
oklch(38.2% 0.083 68.7)
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 #17456F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.022
- Dark Grey Blue #29465B ΔE 0.038
- Light Navy #155084 ΔE 0.044
- Marine Blue #01386A ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.050
- Charcoal #264653 ΔE 0.051
- Cobalt #1E488F ΔE 0.055
- Prussian Blue #1D3557 ΔE 0.058
Use #17456F 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.