#17426E
Closest named color: Twilight Blue (#0A437A). oklch(37.3% 0.089 251.9), rgb(23, 66, 110).
Aa
White text reads best on this color (10.28:1).
About this color
#17426E is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.089 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.021 away. White text reads best on it, at 10.28:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #17426E |
| RGB | rgb(23, 66, 110) |
| HSL | hsl(210, 65%, 26%) |
| OKLCH | oklch(37.3% 0.089 251.9) |
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 #17426E | 10.28:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #17426E | 2.04:1 | Fails | Lc 10.3 | Not readable |
| #17426E text on white | 10.28:1 | AAA | Lc 93.6 | Preferred for body text |
| #17426E text on black | 2.04:1 | Fails | Lc -8.9 | 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
#E1EBF7
oklch(93.6% 0.019 252.9)
-
Step 200
200
#C8DBF2
oklch(88.4% 0.038 253.2)
-
Step 300
300
#A2C4EB
oklch(80.9% 0.066 252.1)
-
Step 400
400
#6EA5E1
oklch(70.8% 0.106 251.5)
-
Step 500
500
#448DD9
oklch(63.2% 0.136 251.6)
-
Step 600
600
#2075C7
oklch(55.6% 0.149 252)
-
Step 700
700
#1062AC
oklch(49.2% 0.138 251.9)
-
Step 800
800
#13508B
oklch(42.7% 0.115 252.1)
-
Step 900
900 (this color)
#17426E
oklch(37.3% 0.089 251.9)
-
Step 950
950
#102741
oklch(26.9% 0.057 253.1)
#17426E 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) | #2D4570 | 0.026 |
| Deuteranopia (no green cones) | #203D6D | 0.016 |
| Tritanopia (no blue cones) | #004C52 | 0.067 |
| Achromatopsia (no color) | #404040 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17426E
#17426E
oklch(37.3% 0.089 251.9)
- #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 #17426E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.021
- Marine Blue #01386A ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.051
- Light Navy #155084 ΔE 0.052
- Charcoal #264653 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.057
- Cobalt #1E488F ΔE 0.057
Use #17426E 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.