#17425B
Closest named color: Dark Grey Blue (#29465B). oklch(36.2% 0.064 237.8), rgb(23, 66, 91).
Aa
White text reads best on this color (10.67:1).
About this color
#17425B is a dark, muted blue. In OKLCH its lightness is 36%, its chroma 0.064 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.024 away. White text reads best on it, at 10.67:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.96:1 |
| White text | 10.67:1 |
Values
| HEX | #17425B |
| RGB | rgb(23, 66, 91) |
| HSL | hsl(202, 60%, 22%) |
| OKLCH | oklch(36.2% 0.064 237.8) |
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 #17425B | 10.67:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #17425B | 1.96:1 | Fails | Lc 9.4 | Not readable |
| #17425B text on white | 10.67:1 | AAA | Lc 94.5 | Preferred for body text |
| #17425B text on black | 1.96:1 | Fails | Lc -8.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF2
oklch(93.5% 0.014 241)
-
Step 200
200
#CADCE9
oklch(88.5% 0.026 239.1)
-
Step 300
300
#A5C6DC
oklch(81% 0.047 237.4)
-
Step 400
400
#72A8CB
oklch(70.7% 0.077 237.7)
-
Step 500
500
#4A92BE
oklch(63.2% 0.098 237.9)
-
Step 600
600
#277BAA
oklch(55.5% 0.107 238.1)
-
Step 700
700
#186892
oklch(49.2% 0.099 237.6)
-
Step 800
800
#185576
oklch(42.8% 0.081 237.2)
-
Step 900
900 (this color)
#17425B
oklch(36.2% 0.064 237.8)
-
Step 950
950
#112938
oklch(26.9% 0.041 238.3)
#17425B 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) | #36425C | 0.036 |
| Deuteranopia (no green cones) | #2D3B5B | 0.030 |
| Tritanopia (no blue cones) | #00484B | 0.041 |
| Achromatopsia (no color) | #3E3E3E | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17425B
#17425B
oklch(36.2% 0.064 237.8)
- #563419
#563419
oklch(36% 0.063 57.3)
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 #17425B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.024
- Charcoal #264653 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.029
- Midnight Green #073B4C ΔE 0.035
- Prussian Blue #1D3557 ΔE 0.041
- Marine Blue #01386A ΔE 0.048
- Dark Teal #014D4E ΔE 0.049
- Twilight Blue #0A437A ΔE 0.053
Use #17425B 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.