#1B466D
Closest named color: Twilight Blue (#0A437A). oklch(38.4% 0.082 248.9), rgb(27, 70, 109).
Aa
White text reads best on this color (9.79:1).
About this color
#1B466D is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.082 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.028 away. White text reads best on it, at 9.79:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.14:1 |
| White text | 9.79:1 |
Values
| HEX | #1B466D |
| RGB | rgb(27, 70, 109) |
| HSL | hsl(209, 60%, 27%) |
| OKLCH | oklch(38.4% 0.082 248.9) |
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 #1B466D | 9.79:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #1B466D | 2.14:1 | Fails | Lc 11.5 | Not readable |
| #1B466D text on white | 9.79:1 | AAA | Lc 92.5 | Preferred for body text |
| #1B466D text on black | 2.14:1 | Fails | Lc -10.0 | 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 900.
-
Step 50
50
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF6
oklch(93.6% 0.018 250.6)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A2C5E7
oklch(80.9% 0.061 247.8)
-
Step 400
400
#6FA6DB
oklch(70.8% 0.097 248.5)
-
Step 500
500
#458ED2
oklch(63.1% 0.126 249)
-
Step 600
600
#2177BF
oklch(55.6% 0.137 248.9)
-
Step 700
700
#1264A5
oklch(49.2% 0.127 248.9)
-
Step 800
800
#145285
oklch(42.8% 0.104 248.5)
-
Step 900
900 (this color)
#1B466D
oklch(38.4% 0.082 248.9)
-
Step 950
950
#10283F
oklch(27% 0.053 249.5)
#1B466D 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) | #34486F | 0.029 |
| Deuteranopia (no green cones) | #29406C | 0.021 |
| Tritanopia (no blue cones) | #004F54 | 0.061 |
| Achromatopsia (no color) | #444444 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1B466D
#1B466D
oklch(38.4% 0.082 248.9)
- #5F3A03
#5F3A03
oklch(38.4% 0.082 69.1)
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 #1B466D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.033
- Light Navy #155084 ΔE 0.044
- Charcoal #264653 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.049
- Marine Blue #01386A ΔE 0.049
- Cobalt #1E488F ΔE 0.057
- Dark Blue Grey #1F3B4D ΔE 0.059
Use #1B466D 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.