#384173
Closest named color: Twilight Blue (#0A437A). oklch(39.3% 0.085 274.1), rgb(56, 65, 115).
Aa
White text reads best on this color (9.66:1).
About this color
#384173 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.085 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.044 away. White text reads best on it, at 9.66:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.17:1 |
| White text | 9.66:1 |
Values
| HEX | #384173 |
| RGB | rgb(56, 65, 115) |
| HSL | hsl(231, 35%, 34%) |
| OKLCH | oklch(39.3% 0.085 274.1) |
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 #384173 | 9.66:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #384173 | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #384173 text on white | 9.66:1 | AAA | Lc 92.3 | Preferred for body text |
| #384173 text on black | 2.17:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B3BEEB
oklch(80.8% 0.065 274.1)
-
Step 400
400
#8D9CE0
oklch(70.8% 0.101 274)
-
Step 500
500
#7282D8
oklch(63.2% 0.13 274.1)
-
Step 600
600
#5B69C5
oklch(55.5% 0.142 274.3)
-
Step 700
700
#4B57AA
oklch(49% 0.132 274.3)
-
Step 800
800
#3D488A
oklch(42.7% 0.109 273.8)
-
Step 900
900 (this color)
#384173
oklch(39.3% 0.085 274.1)
-
Step 950
950
#1E2441
oklch(27% 0.055 273.4)
#384173 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) | #2D4775 | 0.021 |
| Deuteranopia (no green cones) | #284272 | 0.021 |
| Tritanopia (no blue cones) | #214C54 | 0.076 |
| Achromatopsia (no color) | #444444 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #384173
#384173
oklch(39.3% 0.085 274.1)
- #544400
#544400
oklch(39.2% 0.08 93.6)
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 #384173, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.044
- Dark Slate Blue #483D8B ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.052
- Cobalt #1E488F ΔE 0.053
- Light Navy #155084 ΔE 0.053
- Dusk Blue #26538D ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Deep Sea Blue #015482 ΔE 0.064
Use #384173 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.