#164781
Closest named color: Twilight Blue (#0A437A). oklch(39.9% 0.111 255.2), rgb(22, 71, 129).
Aa
White text reads best on this color (9.32:1).
About this color
#164781 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.111 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.018 away. White text reads best on it, at 9.32:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.25:1 |
| White text | 9.32:1 |
Values
| HEX | #164781 |
| RGB | rgb(22, 71, 129) |
| HSL | hsl(213, 71%, 30%) |
| OKLCH | oklch(39.9% 0.111 255.2) |
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 #164781 | 9.32:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #164781 | 2.25:1 | Fails | Lc 12.8 | Not readable |
| #164781 text on white | 9.32:1 | AAA | Lc 91.1 | Preferred for body text |
| #164781 text on black | 2.25:1 | Fails | Lc -11.2 | 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C5DBF8
oklch(88.4% 0.047 255.4)
-
Step 300
300
#9DC4F6
oklch(81% 0.083 254.9)
-
Step 400
400
#65A3F2
oklch(70.8% 0.133 255.2)
-
Step 500
500
#3689ED
oklch(63% 0.17 255.3)
-
Step 600
600
#0070DB
oklch(55.5% 0.184 255.3)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900 (this color)
#164781
oklch(39.9% 0.111 255.2)
-
Step 950
950
#0B2648
oklch(26.9% 0.071 255.8)
#164781 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) | #294C83 | 0.024 |
| Deuteranopia (no green cones) | #144280 | 0.015 |
| Tritanopia (no blue cones) | #00555D | 0.085 |
| Achromatopsia (no color) | #474747 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #164781
#164781
oklch(39.9% 0.111 255.2)
- #614000
#614000
oklch(39.9% 0.084 75.9)
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 #164781, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.018
- Cobalt #1E488F ΔE 0.025
- Light Navy #155084 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.038
- Dusk Blue #26538D ΔE 0.043
- Marine Blue #01386A ΔE 0.060
- Light Navy Blue #2E5A88 ΔE 0.064
- Dark Grey Blue #29465B ΔE 0.065
Use #164781 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.