#17426C
Closest named color: Twilight Blue (#0A437A). oklch(37.2% 0.086 250.9), rgb(23, 66, 108).
Aa
White text reads best on this color (10.33:1).
About this color
#17426C is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.086 and its hue 251°. 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 10.33:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.03:1 |
| White text | 10.33:1 |
Values
| HEX | #17426C |
| RGB | rgb(23, 66, 108) |
| HSL | hsl(210, 65%, 26%) |
| OKLCH | oklch(37.2% 0.086 250.9) |
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 #17426C | 10.33:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #17426C | 2.03:1 | Fails | Lc 10.2 | Not readable |
| #17426C text on white | 10.33:1 | AAA | Lc 93.7 | Preferred for body text |
| #17426C text on black | 2.03:1 | Fails | Lc -8.8 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DBF1
oklch(88.4% 0.037 252.1)
-
Step 300
300
#A2C4EA
oklch(80.9% 0.065 251.5)
-
Step 400
400
#6EA5DF
oklch(70.7% 0.103 250.7)
-
Step 500
500
#458DD6
oklch(63.1% 0.132 251)
-
Step 600
600
#2176C4
oklch(55.7% 0.144 250.9)
-
Step 700
700
#1162A9
oklch(49% 0.134 251.1)
-
Step 800
800
#135189
oklch(42.8% 0.111 250.7)
-
Step 900
900 (this color)
#17426C
oklch(37.2% 0.086 250.9)
-
Step 950
950
#102840
oklch(27.1% 0.054 250.5)
#17426C 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) | #2F456E | 0.028 |
| Deuteranopia (no green cones) | #223D6B | 0.017 |
| Tritanopia (no blue cones) | #004C51 | 0.065 |
| Achromatopsia (no color) | #404040 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17426C
#17426C
oklch(37.2% 0.086 250.9)
- #5A3800
#5A3800
oklch(37.2% 0.08 71.7)
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 #17426C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.024
- Marine Blue #01386A ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.049
- Charcoal #264653 ΔE 0.050
- Light Navy #155084 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.054
- Deep Sea Blue #015482 ΔE 0.060
Use #17426C 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.