#172966
Closest named color: Marine (#042E60). oklch(30.7% 0.11 267.1), rgb(23, 41, 102).
Aa
White text reads best on this color (13.58:1).
About this color
#172966 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.110 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine (#042E60), ΔE 0.023 away. White text reads best on it, at 13.58:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Marine (#042E60) |
| Black text | 1.54:1 |
| White text | 13.58:1 |
Values
| HEX | #172966 |
| RGB | rgb(23, 41, 102) |
| HSL | hsl(226, 63%, 25%) |
| OKLCH | oklch(30.7% 0.11 267.1) |
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 #172966 | 13.58:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #172966 | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #172966 text on white | 13.58:1 | AAA | Lc 99.7 | Preferred for body text |
| #172966 text on black | 1.54:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400
#769BFF
oklch(70.7% 0.152 267.2)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600
#365CFF
oklch(55.6% 0.244 267.2)
-
Step 700
700
#243CF5
oklch(49.1% 0.268 267.1)
-
Step 800
800
#1D34C6
oklch(42.7% 0.223 267.1)
-
Step 900
900
#1A319B
oklch(37.6% 0.173 267.1)
-
Step 950
950 (this color)
#172966
oklch(30.7% 0.11 267.1)
#172966 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) | #003268 | 0.027 |
| Deuteranopia (no green cones) | #002A65 | 0.019 |
| Tritanopia (no blue cones) | #003843 | 0.087 |
| Achromatopsia (no color) | #2E2E2E | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #172966
#172966
oklch(30.7% 0.11 267.1)
- #3D2D00
#3D2D00
oklch(30.7% 0.063 87.3)
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 #172966, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine #042E60 ΔE 0.023
- Midnight Blue #191970 ΔE 0.041
- Marine Blue #01386A ΔE 0.043
- Prussian Blue #1D3557 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.078
- Dark Royal Blue #02066F ΔE 0.078
- Twilight Blue #0A437A ΔE 0.079
Use #172966 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.