#163D9C
Closest named color: Sapphire (#2138AB). oklch(39.8% 0.161 263.7), rgb(22, 61, 156).
Aa
White text reads best on this color (9.62:1).
About this color
#163D9C is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.161 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.028 away. White text reads best on it, at 9.62:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.161) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #163D9C |
| RGB | rgb(22, 61, 156) |
| HSL | hsl(223, 75%, 35%) |
| OKLCH | oklch(39.8% 0.161 263.7) |
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 #163D9C | 9.62:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #163D9C | 2.18:1 | Fails | Lc 12.3 | Not readable |
| #163D9C text on white | 9.62:1 | AAA | Lc 91.6 | Preferred for body text |
| #163D9C text on black | 2.18:1 | Fails | Lc -10.8 | 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
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#DFEAFF
oklch(93.5% 0.031 263.5)
-
Step 200
200
#C6DAFF
oklch(88.5% 0.056 262.8)
-
Step 300
300
#A1C0FF
oklch(80.8% 0.096 264.1)
-
Step 400
400
#6F9DFF
oklch(70.7% 0.152 263.9)
-
Step 500
500
#4880FF
oklch(63% 0.198 263.8)
-
Step 600
600
#2060FF
oklch(55.7% 0.244 263.6)
-
Step 700
700
#0947EB
oklch(49.1% 0.25 263.7)
-
Step 800
800
#0B3CBD
oklch(42.6% 0.207 263.7)
-
Step 900
900 (this color)
#163D9C
oklch(39.8% 0.161 263.7)
-
Step 950
950
#0A2157
oklch(26.9% 0.102 263.6)
#163D9C 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) | #004B9F | 0.035 |
| Deuteranopia (no green cones) | #003F9A | 0.011 |
| Tritanopia (no blue cones) | #005566 | 0.123 |
| Achromatopsia (no color) | #454545 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #163D9C
#163D9C
oklch(39.8% 0.161 263.7)
- #5C4300
#5C4300
oklch(39.9% 0.082 84.4)
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 #163D9C, closest first.
No curated palette has a color within ΔE 0.04 of #163D9C.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.028
- Cobalt #1E488F ΔE 0.039
- Twilight Blue #0A437A ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.068
- Light Navy #155084 ΔE 0.069
- Dusk Blue #26538D ΔE 0.071
- Blue Blue #2242C7 ΔE 0.072
Use #163D9C 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.