#18476C
Closest named color: Twilight Blue (#0A437A). oklch(38.5% 0.081 246), rgb(24, 71, 108).
Aa
White text reads best on this color (9.73:1).
About this color
#18476C is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.081 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.030 away. White text reads best on it, at 9.73:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #18476C |
| RGB | rgb(24, 71, 108) |
| HSL | hsl(206, 64%, 26%) |
| OKLCH | oklch(38.5% 0.081 246) |
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 #18476C | 9.73:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #18476C | 2.15:1 | Fails | Lc 11.7 | Not readable |
| #18476C text on white | 9.73:1 | AAA | Lc 92.3 | Preferred for body text |
| #18476C text on black | 2.15:1 | Fails | Lc -10.1 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E1EBF5
oklch(93.5% 0.017 248)
-
Step 200
200
#C8DCEF
oklch(88.5% 0.034 246.8)
-
Step 300
300
#A1C5E6
oklch(80.8% 0.061 246.3)
-
Step 400
400
#6CA7DA
oklch(70.8% 0.097 245.8)
-
Step 500
500
#408FCF
oklch(63% 0.124 246)
-
Step 600
600
#1778BC
oklch(55.5% 0.134 246)
-
Step 700
700
#0365A3
oklch(49.1% 0.126 246.1)
-
Step 800
800
#0C5384
oklch(42.8% 0.104 245.8)
-
Step 900
900 (this color)
#18476C
oklch(38.5% 0.081 246)
-
Step 950
950
#0E283E
oklch(26.9% 0.052 246.9)
#18476C 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) | #36486E | 0.033 |
| Deuteranopia (no green cones) | #2A406B | 0.025 |
| Tritanopia (no blue cones) | #005054 | 0.059 |
| Achromatopsia (no color) | #444444 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18476C
#18476C
oklch(38.5% 0.081 246)
- #603A08
#603A08
oklch(38.6% 0.08 66.8)
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 #18476C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.031
- Charcoal #264653 ΔE 0.043
- Light Navy #155084 ΔE 0.045
- Deep Sea Blue #015482 ΔE 0.048
- Marine Blue #01386A ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.058
- Cobalt #1E488F ΔE 0.060
Use #18476C 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.